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The 2015 season is just a day away.

For Florida, it'll kick off the campaign with a contest in The Swamp at 7:30 p.m. Saturday night against New Mexico State that will be televised on the SEC Network.

With the Gators heavily favored in this match-up - and it being Jim McElwain 's Florida debut - here are 10 storylines to follow throughout Saturday night's game.

1. How does McElwain rotate quarterbacks Treon Harris and Will Grier? And which quarterback will perform the best under the lights? McElwain named Harris the starter on Wednesday since the sophomore has outplayed Grier by a slight margin in practice in recent weeks, but Grier will definitely play Saturday per the first-year head coach. Both won't alternate series by series - each is expected to have at least 2-3 back-to-back drives until the next one comes in. It'll be crucial to watch how Harris moves the offense down the field - and how confidently Grier performs in his first collegiate game. This game may or may not determine a permanent victor, but it will go a long way in deciding who reigns supreme in the quarterback battle. McElwain named Harris the starter on Wednesday since the sophomore has outplayed Grier by a slight margin in practice in recent weeks, but Grier will definitely play Saturday per the first-year head coach. Both won't alternate series by series - each is expected to have at least 2-3 back-to-back drives until the next one comes in. It'll be crucial to watch how Harris moves the offense down the field - and how confidently Grier performs in his first collegiate game. This game may or may not determine a permanent victor, but it will go a long way in deciding who reigns supreme in the quarterback battle.

2. How much will senior linebacker Antonio Morrison play and how will he look coming back from injury? After two knee surgeries this off-season since suffering a serious knee injury in the Birmingham Bowl last January, Morrison is back much sooner than expected. What was a 12-month timetable turned into 7-8 months thanks to Morrison's tireless effort rehabbing in the training room. It should be interesting to see if he starts, how much he plays in his first game back and how he looks both mobility and agility-wise. So far, he's been fine in those departments this fall. After two knee surgeries this off-season since suffering a serious knee injury in the Birmingham Bowl last January, Morrison is back much sooner than expected. What was a 12-month timetable turned into 7-8 months thanks to Morrison's tireless effort rehabbing in the training room. It should be interesting to see if he starts, how much he plays in his first game back and how he looks both mobility and agility-wise. So far, he's been fine in those departments this fall.

4. Will UF's running backs take advantage of New Mexico State's poor rushing defense? The Aggies were dead last in the nation last season in rushing defense and aren't expected to be much better in that department. If Florida's offensive line could open up some holes, this could be a heyday for junior The Aggies were dead last in the nation last season in rushing defense and aren't expected to be much better in that department. If Florida's offensive line could open up some holes, this could be a heyday for junior Kelvin Taylor and freshmen Jordan Scarlett and Jordan Cronkrite . If this game gets out of hand early, Case Harrison and Mark Herndon could also see some carries near game's end.

7. How does the Florida's defense fare against NMSU's rushing attack? Although Aggies projected starting offensive tackle Thomas McGwire is out with a knee injury, New Mexico State is expected to start three seniors and two juniors across the offensive line, which is perhaps NMSU's greatest strength on its roster. The group allowed only 10 sacks in 2014, which was third best in the nation. Can Florida's defense, which is superior from a talent standpoint, generate enough pressure in the pass rush to get to the quarterback, as well as shut down the run, on Saturday night?

8. Will Florida's secondary have a heyday as well Saturday? After all, New Mexico State quarterback Tyler Rogers led the nation in interceptions last season with 23 -- at least five more than any other signal-caller. The biggest challenge for Florida's defensive backs will be Aggies receiver Teldrick Morgan, who was named to the Biletnikoff Award watch list, but Vernon Hargreaves shouldn't have a hard time covering him. Overall, it looks like it'll be a tough day for New Mexico State in the passing department against this elite of a secondary.

9. If Florida blows out New Mexico State as expected, how early though will the Gators make the game considerably out of reach? Let's use about a four-touchdown lead as the benchmark here. The Gators decimated Eastern Michigan last year in a 65-0 blowout and had a 27-0 lead on EMU by the middle of the second quarter. Even with the Gators having question marks at quarterback, wide receiver and offensive line, many still expect Saturday's game to go the same way. (The Gators are what now, a 37-point favorite?) If Florida can get a considerable lead on New Mexico State early, that would speak to Harris' successes, as he'll have the first few drives to prove himself.

10. Will the weather in Gainesville spare the Gators this time around in their season-opener? Student tickets sold out Thursday night and a good number of alumni are expected to fill the seats, so it should be a rocking atmosphere Saturday night in McElwain's debut. The only question now is if the weather will hold up and if Florida can hold off another disappointing Idaho situation from happening. According to Weather.com as of Friday afternoon, Saturday night should see partly cloudy skies with a stray shower or thunderstorm being possible. The forecast is 71 degrees and 89% humidity with winds of 5-10 miles per hour.