The prelims are over.

The heavyweights are warming up in the locker room.

Here are the 5 best storylines I can’t wait to watch unfold on the first full Saturday down South.

SEC vs. ACC

Contrary to what ESPN wants you to believe, the SEC’s biggest rival is not the Big Ten. It’s the ACC. You heard ACC coaches pound the message all offseason: Two titles in four years (both over SEC teams), two Heisman winners in that same span.

The calendar has flipped, but beginning today, we’ll see whether the script has.

There are three clashes, but one clearly matters more than the other two.

In order for the SEC to return to its top perch, No. 1 Alabama must beat No. 3 Florida State. A Tennessee victory over Georgia Tech on Monday would be nice, as would South Carolina knocking off preseason darling N.C. State. But those two games won’t move the needle much one way or another.

Alabama was the SEC’s only team ranked in the Top 10. The doubters already are using their preseason voting to question Alabama’s schedule.

It will only get worse if Bama falls.

If all three fall — quite possible — y’all might want to stay off Twitter for a while.

2. Can McElwain get a fair fight, ever?

Of course Jim McElwain’s quarterback wears No. 13.

At this point, I wouldn’t be surprised if a black cat replaced Albert, the Gators broke every mirror in the locker room and then ran under a ladder instead of through some smoke onto the turf at Jerry World to face No. 11 Michigan.

“They” say you create your own luck, but I’m guessing “they” never had a star QB stop by GNC on his way to practice or seemingly half the team decide to go into the “banking’ business.

Who’s their advisor? Nevin Shapiro or Joel Goodsen?

Ten suspended players will miss the Michigan game. Two of those were the two most likely to find the end zone Saturday: Antonio Callaway and Jordan Scarlett.

Credit: Logan Bowles-USA TODAY Sports

McElwain basically has had to apologize for winning the watered-down East for two years. Nobody thinks those Gators were very good. Saturday was his chance, and theirs, to silence the haters.

Now? Good luck. And good grief.

The highlight of his summer might have been that shark photo. At least that guy looked happy.

3. LSU’s backfield in motion

I love jet sweeps. I love everything about them. The speed, the anticipation of a big play, the headaches they cause on defense, the deception they create on fakes.

I cannot wait to see what Matt Canada does with this LSU offense.

Derrius Guice in space, on a wheel route … instead of always inside the tackles?

LSU always has the athletes to lead the SEC in scoring. This year, they have the OC to come close to actually doing it.

4. Whatcha got, Jarrett?

This is how out of control this is getting.

Kamryn Pettway was arguably the most terrifying running back in the SEC last season, and Tigers fans might boo if he gets more touches on Auburn’s opening possession than Jarrett Stidham gets throws.

First play has to be a play-action go route to Nate Craig-Myers, right?

There’s one reason I’m tuning in to watch — and it’s not to see which one of these rushing teams can outrush the other.

5. The Shea Patterson Show starts … now

Flag football meets the SEC in Oxford this season. Nothing matters. So go have some fun.

Hang 50 on somebody every Saturday so we can forget about the NCAA wrecking ball swinging dangerously close to the football office.

Who better to quarterback that kind of situation than Patterson, whose playground style seems to be a mix and match of Brett Favre and Johnny Manziel.

Patterson won’t play in enough games to get to 4,000 yards, but he might average more than the 310 yards that Chad Kelly did in 2015.

Let it rip.