Three-and-out.

It not only applies to a lot of SEC offenses this season but also the extremely top-heavy pecking order among its quarterbacks.

Chad Kelly, Dak Prescott and Brandon Allen had three of the best single seasons in conference history. Kelly already has posted a top-10 season for yards (3,740) and could become just the third SEC QB in history to reach 4,000 with an average performance in Ole Miss’ bowl game.

Prescott (3,413) is 275 yards from moving into the top 10 and needs to throw for close to 500 stay in a new top 5 that likely will include Kelly. He threw for a career-best 508 recently against Arkansas — and he threw for a then-career best 453 in last year’s bowl loss to Georgia Tech.

Allen needs a 400-yard game to secure a spot in the single season top-20. He’s already had three this season, including a career-best 442 against Kelly and Ole Miss.

Beyond those three? The start of a slippery slope that ended with a collection of sameness at the bottom.

Here, then, is how we ranked the SEC’s top 10 quarterbacks after the 2015 regular season.

10. Perry Orth, South Carolina: A former walk-on making this list typifies a season in which several starters — including Orth — were benched, two who should be on this list — Maty Mauk and Will Grier — were suspended and a handful transferred. The SEC QB situation was a season-long mess. Orth replaced the injured Connor Mitch and finished top 10 in the SEC in passing yards (No. 8, 1929) and touchdown passes (tied for seventh, 12).

9. Treon Harris, Florida: As ugly as it was at times, Harris still had a better TD-to-INT ratio (9-5) than guys like Jeremy Johnson (9-7), Johnny McCrary (6-12), Kyler Murray (5-7), Drew Lock (4-8), Patrick Towles (9-14), Orth (12-9), Mauk (6-4), etc., etc.

8. Brandon Harris, LSU: The sophomore was oft-maligned and the game-plan often one-sided, but Harris had his moments. His TD pass against Alabama while taking a shot to the ribs spoke to his toughness and pocket presence. There were glimpses in 2015 — 12-to-5 TD/INT ratio — and if he progresses the way most good QBs do, he could be a breakout star in 2016. LSU will always have enough weapons on the outside.

7. Kyle Allen, Texas A&M: On the surface, a successful season: He led the SEC sophomore QBs with 17 TD passes and threw just 7 interceptions. Clearly, there were issues below the surface, however, which eventually led to his decision to transfer.

6. Greyson Lambert, Georgia: Another target for talk radio and Twitter, Lambert’s season — just like Georgia’s — could be divided into two parts: with Nick Chubb, without Nick Chubb. Georgia didn’t bring in Lambert to throw 40 times for 300 yards. They brought him in to be smart, selective and accurate. He was all of those things. Problem was, once Chubb went down, suddenly the offense needed Lambert to be more than what he is. Lambert threw 9 of his 11 TD passes in games in which Chubb played. He threw just two more in the final six, when defenses no longer had to account for Chubb.

5. Jake Coker, Alabama: Gets dinged for being a game manager, but the tight-window throw he made into double coverage against Florida demonstrated his arm strength. He threw 17 TDs against 8 INTs. Alabama didn’t need him to win a game this year, but it’s noteworthy that they lost the only game in which he didn’t start, and he almost rallied Alabama past Ole Miss.

4. Joshua Dobbs, Tennessee: If Kelly leaves for the NFL, Dobbs will enter the 2016 season as the QB to beat in the SEC. Dobbs took the next step in his development this season, nearly doubling his yardage total, throwing for six more TDs with one fewer interception than last season. He also ran for 623 yards — most by an SEC QB — and 9 TDs.

3. Brandon Allen, Arkansas: Allen led the SEC with 29 TD passes. He needs just one in the bowl game to move into the SEC’s top 20 for single-season best. If he throws 5 against Kansas State, he’ll jump all the way into a tie for 10th.

2. Chad Kelly, Ole Miss: Kelly threw for more yards and two more TDs than his primary competition for the top spot, but he also threw 12 interceptions, tied for second-most in the conference.

1. Dak Prescott, Mississippi State: Remember Jordan and the Jordanaires? Of course you do. At times, that’s what watching Prescott was like. He had some help, particularly on the outside, but for the past two years the game plan has been: Stop Prescott, stop the Bulldogs. Few did. The most impressive part about his season was a remarkably smart 25-to-4 TD to INT ratio. Even when he knew he had to make plays, he rarely made poor decisions. He also ran for 10 TDs, sharing the SEC lead for QBs with Kelly.