Underdog Promo Code SDS: 50% Deposit Match Up to $1,000 + Keep Your Million (September 2026)
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Looking for the latest Underdog promo code? New users can use promo code SDS to unlock Underdog’s current welcome offer, including 50% deposit match up to $1,000 and Keep Your Million. Keep Your Million gives eligible users a virtual $1 million balance to work with through a series of Higher or Lower picks, while the deposit match adds value when new users fund their account. See how the offer works and what you need to know before signing up below.
The Lions vs. Bills matchup has the potential for plenty of offense. My favorite DFS plays are Josh Allen for 2+ passing touchdowns and Jahmyr Gibbs for more than 74.5 rushing yards.
UNDERDOG FANTASY50% DEPOSIT MATCH UP TO $1,000 & KEEP YOUR MILLION W/ CODE SDS!
- UNDERDOG PREDICT
50% DEPOSIT MATCH UP TO $1,000 & KEEP YOUR MILLION W/ CODE SDS!
Underdog Promo Code SDS for September 2026
Underdog promo code SDS gives you a 50% First-Time Deposit Match up to $1,000 in bonus funds plus a shot at $1 million with Keep Your Million!
Here are the details on how to claim the Underdog promo code SDS offer:
Underdog Fantasy Promo Code: Terms and Conditions
New users who sign up with promo code SDS may be eligible for Keep Your Million and a 50% deposit match up to $1,000. You must make a minimum $10 deposit to qualify. Keep Your Million gives eligible users a virtual $1 million balance to use on Higher or Lower questions.
Offer availability, eligibility, deposit requirements, deadlines, and bonus terms vary by user and location. See Underdog’s current promotion terms for complete details.
Underdog Deposit Match Up to $1,000 + Keep Your Million
Keep Your Million is an Underdog promotional game that gives eligible users a virtual $1 million balance to start. You then answer 20 Higher or Lower questions based on player projections, deciding how much of your balance to put on each side.
The goal is to make it through all 20 questions while preserving as much of your virtual balance as possible. Whatever is left at the end is awarded as Underdog bonus funds, up to the $1 million maximum.
Keep Your Million is only available to eligible users who select it as their welcome offer, so check the current terms and requirements before signing up.
How to Use the Underdog Promo Code for DFS
- Click “CLAIM BONUS” on this page to access the best Underdog promo available in your state.
- Click the SIGN UP button to navigate to Underdog’s registration page.
- Enter all your information and make sure you enter the SDS promo code for Underdog. It may fill in automatically.
- Make your first deposit of at least $10 using one of the available options to claim the deposit match bonus.
- Play Keep Your Million within 21 days of signing up.
To take full advantage of this offer, fully understand the Keep Your Million game. Here are the contest terms and rules.
Every eligible customer will receive a virtual $1,000,000 pot of Milly Bucks to begin.
- Step 1 – Pick a question
- Ex: Will Patrick Mahomes throw for Higher or Lower than 275 passing yards?
- Step 2 – Split your million.
- Drag a slider to divide the pot between Higher and Lower. You can go 100% on one side, split it 50/50, or anything in between. All the money has to go somewhere.
- Step 3 – Lock it in
- Once you submit your pick before the game starts, it’s locked. You can’t change it.
- Step 4 – Keep your winnings
- When the game settles, keep whatever you put on the winning side. That amount becomes your pot for the next question.
- Step 5 – Run it back
- Make a pick for up to 20 questions. Survive all 20 and cash out whatever’s left in Underdog bonus funds.
No winnings are awarded if the player’s balance reaches $0 before they reach the end of the contest. You cannot withdraw Milly Bucks or use them for any purpose other than Keep Your Million.
You cannot withdraw site credit or entry tokens for cash. Once played one time, any winnings become cash in your account balance. The value of the Underdog site credit or entry tokens is not included in any winnings. Bonus entries do not expire, whereas bonus funds/site credits expire after 14 days.
- UNDERDOG FANTASY
50% DEPOSIT MATCH UP TO $1,000 & KEEP YOUR MILLION W/ CODE SDS!
- UNDERDOG PREDICT
50% DEPOSIT MATCH UP TO $1,000 & KEEP YOUR MILLION W/ CODE SDS!
My DFS TNF Picks for September 17, 2026
These are my three favorite picks for Thursday Night Football!
How Does Underdog Compare to Other DFS Apps?
Underdog is a major player in the DFS space, and it’s become one of the best options for users looking to make picks and enter fantasy contests. But while Underdog was one of the first major DFS apps to see success in the market, it’s far from the only option out there for DFS enthusiasts. Underdog competitors include Dabble, Prize Picks, Betr, Splash Sports, Chalkboard, Splash and many more. Check out our list of some of the best DFS apps for more:
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|---|---|---|---|---|
| App & Interface | Great app, great branding, picks are easy to navigate | Great app, simple, easy for new users | Very stable app, can be intimidating at first with a more “power user” like interface | Great app, visually strong with easy-to-navigate picks page |
| Picks Types & Modes | Pick’Em: Sets of 2-5 picks. Must get all right. Payouts of 3x to 20x. Insured Picks: Sets of 3-5 picks. Can miss one and still earn money. Payouts of 1x to 10x. | Power Play: Sets of 2-4 picks. Must get all right. Payouts of 3x to 10x. Flex Play: Sets of 3-6 picks where you don’t have to get all of them right. Wider ranger of payouts based on outcomes. | Every pick has dynamic and variable multipliers. A over/under on rushing yards might be 1.4x while a touchdowns over/under might be 3x. Total payout/multipliers are determined based on specific combinations of picks. | All-In: Users can get up to 1000x for 12 correct entries Hedge Play: Multiplier varies by No. of correct entries. For example, if you make 8 entries and 7 are correct, you’d collect a 35x multiplier. |
| Minimum Entry Amount | $5 | $5 | $5 | $5 |
| Max Payout | 500x | 37.5x for 6-pick entry | 100x | 1000x |
| Welcome Offer & Bonus | 50% Deposit Match Up to $1,000 + Keep Your Million | Play $5, Get $150 If You Win | 2 No Sweat Tokens, up to $200 back in Bonus + A New User Free Pick | Spend $5 & Get $50 in Free Play + 100% Deposit Match Up to $100! |
| Promo Code | SDS | SOUTH | SOUTH | SOUTH50 |
| States Avaliable | All US States Except: CT, HI, ID, IA, LA, MI, MT, NV, WA and ON (Canada) | All states except HI, ID, MT, NV, WA | AK, AL, AR, AZ, CA, CO, CT, GA, IL, IN, KS, KY, MA, MD, MN, NC, ND, NH, NM, OK, OR, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY. 19+ in Nebraska. | CA, KS, KY, MN, NM, ND, RI, SC, SD, UT, WV |
Underdog Promo Code for Existing Users
The other promotions I value most are the ones that boost potential winnings. Player Multiplier Boosts and Supercharge tokens allow me to increase payouts on players or entries I feel especially confident about based on favorable matchups. They add another layer of strategy by letting me use my football knowledge to maximize profit potential, making the experience more rewarding beyond just protecting my bankroll.
What I’ve Learned From Using Underdog Fantasy
After using Underdog for more than a year, I’ve found it to be a fun and easy way to make sports more engaging. I’ve played Pick’em, Best Ball, DFS and head-to-head contests across the NFL, NBA, MLB, golf and hockey. The app is clean, fast and simple to navigate, with straightforward deposits and withdrawals. That said, winning consistently can be difficult, and I’d like to see more contest variety, stronger player research tools and additional ways to help users make informed picks.
Underdog Fantasy App: Contest Types
Underdog Fantasy offers a wide variety of contest formats, giving users multiple ways to play and win across their favorite sports. Whether you prefer quick pick’em-style entries or larger tournament-style contests, there’s something for every type of DFS player on the app.
These are the types of contests you’ll find on Underdog:
Best Ball Contests
The Underdog best ball contests garner a ton of attention. Not only do the huge NFL Mania $15 million prize pool contests bring in a lot of press for Underdog and their fantasy platform, but these best ball contests lead to a wide range of content around guaranteed prize pool and best ball strategy. Once you get into these contests, it’s hard to get out. They are incredibly fun.
And hey, Best Ball Mania costs $25 to enter.That could net you 3 Best Ball Mania lineups!
Best ball tournaments aren’t necessarily something that haven’t been around, but Underdog has indeed taken these huge contests to another level both with the user interface and app quality, but of course, the huge prize pools that get a lot of attention.
The season long, big prize pool contests are incredibly fun. Here’s how it works:
- Draft your roster before the season starts. This might mean the NFL season, the MLB season, the PGA majors season, whatever.
- The contest is divided into elimination rounds. In the NFL, it’s often the first 14 weeks of the regular season. In the PGA, it’s the first major. Because these contests offer huge prize pool money that is concentrated to the top winners, you have to make it through a few rounds and try to get into the final round.
- The best ball mechanism means that you don’t have to set your roster or worry about trades or waiver wire pick ups. The best scoring people on your team count each week, or each game. It’s simple.
- You can begin layering in some advanced strategy by deploying multiple entries in a single contest. Some of the large contests allow you to enter as many as 150 entries.
The $50 entries in these best ball contests. For example, the NFL Best Ball Mania contest has a $25 entry fee.
Battle Royale Daily Fantasy Draft
Underdog offers standard daily fantasy contests where you draft a lineup and compete against other users over a single slate of games.
Battle Royale is where things get more interesting. Instead of a typical lineup build, you enter a live snake draft with a small group, usually 6 to 12 users. But you are not just competing against your draft room. You are competing against every entry in the contest.
For example, in a six person draft for an NBA slate, you pick six players in snake format. Even though you only draft against five other users, your lineup is scored against thousands of entries. That means smaller draft rooms, but much larger prize pools.
The payouts reflect that structure. It is difficult to hit a top prize, but a large portion of the field still cashes, making it easier to win something while still chasing a bigger score.
Here are some screengrabs from my first NBA contest on Underdog:
Tips for your first Battle Royale draft:
- Make sure you understand the point scoring. On this NBA draft, I didn’t realize until a few picks in that steals counted for more points than I realized.
- The draft goes quick! When it starts, it moves quick and you might struggle to keep up. Get a feel for who you want before it begins.
- Go with a very small entry fee for your first draft, so you don’t risk much money on your first go-around. Use it as a learning experience.
Regular Daily Fantasy Drafts
While Battle Royale is a large field contest, Underdog also offers simple head to head drafts against one opponent.
You each draft six NBA players, and if you win, you nearly double your entry after rake. The drafts take just a couple minutes, making it an easy way to get action on a nightly slate.
The downside is repetition. With a small player pool, you end up drafting the same top players most of the time, so results can feel a bit random.
Still, it is a fun and simple format, with enough strategy to keep things interesting.
Important Note:
As I was getting used to the Underdog platform, I entered a daily fantasy two player NBA matchup. I sat there for a minute and nobody entered the contest. So I left, and joined another. Nobody entered for a minute, and so I left again, and shut the app off. A few minutes later, I got a notification from Underdog that my draft was about to start! I didn’t realize that once you enter, you’re in, even if you leave. So I completed the draft. Then I got another notification saying my draft was about to start! If you remember, I entered two drafts casually and left both. Well, I was locked into both. So without realizing it, I had committed to two NBA drafts for the same day. Be aware that if you enter the contest, you’re in.
Underdog Pick’em Contests
As someone who kind of exited the daily fantasy space a few years ago after the big wave, it’s the pick’em contests that pulled me back in to Underdog. These contests are quite similar to prop bets, and more closely resemble actual sports betting than anything else in fantasy.
There are two types of pick’em contests on Underdog. Higher/lower pick’ems (which resemble over/under player prop bets in sports betting) and Rivals. Regardless of the type, you have to combine at least 2 picks and as many as 5. The more you combine, the higher the multiplier or potential payout.
Underdog Pick’em Contests & Higher/Lower
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Underdog Pick’em lets you make predictions on player stats across a variety of sports. With Higher/Lower, you choose whether a player will finish above or below a posted stat line. For example, you could pick whether an NBA player will score more or fewer than 28.5 points in a matchup.
Underdog also offers Rivals, where you compare two players in the same stat category, with a spread added to one side to help balance the matchup. You can combine multiple picks into an entry, with potential payouts increasing as you add more selections. The interface makes it easy to build an entry, track your selections and see the potential payout before submitting your picks. Overall, Pick’em is straightforward for new users while offering plenty of options across sports including the NFL, NBA, MLB, college football and more.
Underdog Fantasy Scoring Rules
Every contest on Underdog uses a defined scoring system, but the exact format depends on the sport and contest type. In Best Ball or Battle Royale, fantasy points determine your final score. In Pick’em, you predict whether a player will finish higher or lower than a projected stat line.
Below are the standard fantasy scoring systems used in many of Underdog’s draft-style contests.
NFL Fantasy Scoring
Underdog’s NFL contests use a half-PPR scoring format, striking a balance between standard and full PPR leagues.
Best Ball automatically starts your highest-scoring players each week, so you never have to set your lineup after the draft.
NBA Fantasy Scoring
NBA contests reward players who contribute across multiple statistical categories rather than just scoring points.
Players who consistently fill the box score often provide higher fantasy ceilings than pure scorers, making all-around contributors especially valuable in Battle Royale drafts.
MLB Fantasy Scoring
Baseball scoring is split between hitters and pitchers.
Hitters
Pitchers
Pitchers with high strikeout upside generally have the highest fantasy ceilings, while hitters benefit from favorable matchups and lineup position.
Pick’em Scoring
Pick’em contests work differently than fantasy drafts. Instead of earning fantasy points, you predict whether a player will finish higher or lower than a statistical projection.
Depending on the sport, those projections can include:
- Passing yards
- Rushing yards
- Receiving yards
- Strikeouts
- Hits
- Points
- Rebounds
- Assists
- Three-pointers made
- Goals
- Shots on goal
- Birdies
- Fantasy points
- And dozens of other player statistics
The more picks you combine correctly on a single entry, the larger your potential payout. Since you only make projections instead of building a lineup, Pick’em contests are often the fastest way to start on Underdog.
Do Scoring Rules Change by Contest?
The scoring system usually stays the same within each sport, whether you’re playing Best Ball or Battle Royale. The biggest difference is the contest format.
Best Ball automatically counts your highest-scoring players each week and requires no lineup management after the draft. Battle Royale is a single-slate draft contest where all fantasy points matter against a much larger prize pool. Pick’em contests don’t use fantasy scoring at all and instead rely on correctly predicting player statistics.
CFB on Underdog
One of the reasons we love Underdog and are passionate about our own Underdog promo code for our users is because this type of action is live and legal in many of the college football states where sports betting is not legal. As you consider getting in on the action for your favorite college football team, here are some specific notes to be aware of with regards to college football on the Underdog platform.
- Daily fantasy drafts are not available for college football
- If college football is your love, goto pick’ems on the Underdog app and you can do higher/lower as well as rivals pick’ems for a number of college football contests
- Underdog often doesn’t have the college football pick’em options up until Thursday mornings ahead of Saturday games
- Underdog does not provide live scoring for college football contests (on sports like NFL, you can follow the live results with live scoring)
Is Underdog legal in my state?
The question of where Underdog is legal is one that many fantasy players want to know. Underdog is currently legal and available in 41 states including large non-sports betting states such as Texas, Florida, Alabama and Georgia. The app is not available in the following states: CT, HI, ID, IA, LA, MI, MT, NV and WA. Additionally, the app is not available in Ontario, Canada. With it’s larger spread across 41 states, players who reside in states where online sports betting is not currently legal can still get involved in fantasy sports.
Below is a complete map of where Underdog is legal:
California is a special case right now. The California attorney general has declared DFS contests illegal in the state, but as of September 2026, none of the most-popular DFS apps have stopped operating in the Golden State. We’ll cover this issue as news continues to break. As of September 9th, 2026, Underdog has shut down drafts in these states: MA, MD, MI, MS, NJ, PA and OH
Underdog Promo Code FAQ
Is Underdog Legit?
Absolutely! Underdog has established themselves as a leading provider of fantasy sports, offering a wide range of features and modes including Best Ball and Pick’em.
What is Underdog?
Underdog is one of largest daily fantasy sports platforms available, including some of the biggest Best Ball contests to choose from. Unlike traditional daily fantasy sites, Underdog’s offerings are almost exclusively in a snake draft format.
What is the minimum deposit for Underdog?
The minimum deposit for Underdog is $10 and can be done via PayPal, Apple Pay, Venmo or credit card.
What is the best promo code on Underdog
The best promo code on Underdog is SDS. Use that code, get a 50% first-time deposit match up to $1,000 in bonus funds.
Is Underdog real money?
Underdog DFS contests involve real money. This includes traditional daily fantasy contests, best ball contests and Underdog pick’em contests. You can deposit and withdraw money into your account through a variety of methods.
How does Underdog pay out?
Each Underdog contest has different payouts depending on the rules of contests. Withdrawing your money from Underdog can be done via PayPal or e-check. The minimum withdrawal amount is $10 unless your account balance is less than $10. There are no fees incurred for withdrawing money.
Where is Underdog legal?
Underdog is legal and available in 41 states. The app is not available in CT, HI, ID, IA, LA, MI, MT, NV or WA. The app is available, but pick’em contests are not permitted in the following states: AZ, CO, MD, MO, NH, NJ, OH, PA, TN, WV.
Does Underdog Fantasy offer responsible gaming tools?
Yes. Underdog Fantasy provides responsible gaming tools that help users stay in control of their play. Depending on your state, you may be able to set deposit and contest entry limits, take a cooling-off break, or self-exclude from the platform for a longer period. If you or someone you know needs support for problem gambling, help is available 24/7 by calling 1-800-GAMBLER or through the National Council on Problem Gambling (NCPG).
Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog operates. Terms apply. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI,NY, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369)
Danny Destler is a daily fantasy sports (DFS) and sports betting expert with deep knowledge across a wide range of sports. A graduate of Marist University, he specializes in creating sharp, engaging, and evergreen content that resonates with both seasoned DFS players and casual fans alike.
