The final round of the men’s golf season’s first major, The Masters, could feature an explosive shootout, as second-and third-round leader Patrick Reed attempts to stay at the the top of the leaderboard, and win one of the sport’s four biggest championships for the first time. But former world number one Rory McIlroy will be looking to chase down the American, and become the sixth player to complete the Career Grand Slam.

Reed went into the third round at the Augusta National Golf Club holding a two-shot edge. The beefy 27-year-old had previously never shot below 70 at the famed course, but ripped off his third straight session in the 60s to extend his advantage to three strokes, at 14-under-par.

Winning his first major title at the Masters would be especially sweet for Reed, who attended nearby Augusta State University, where he led the golf team to consecutive NCAA Division II Championships in 2010 and 2011.

“To be able to go to Augusta College, when I was there it was Augusta State, to be able to go there and to play some solid golf and feel like I grew as a player, it’s gonna be awesome to come out (Sunday) and play in the afternoon,” said Reed. “Especially the last tee time, and to have a lot of Augusta State guys out here cheering me on, and hopefully going out and showing them a fun Sunday.”

Reed will have to be wary of McIlroy, who has been chasing a Career Grand Slam – at least one win in each of the sport’s four majors – for the last four years. The Northern Irishman triumphed at the PGA Championship in 2012 and 2014, while also claiming trophies at the US Open (2011) and Britain’s Open Championship (2014). But he blew a four-shot lead on the final day of the Masters in 2011, and finished tied for 15th.

“I know that there’s people out there that are wishing me well and hoping that I play well, so it won’t be quite as intense as that Ryder Cup match, I don’t think,” said McIlroy, referring to his head-to-head loss against Reed in the biennial Europe vs. USA event in 2014. “I think we’ll both obviously still be feeling that it’s the last round of a major championship and we’re both going for – Patrick’s going for his first and I’m going for something else – and it’s gonna be good fun.”

The support of local fans, as well as the memory of his Ryder Cup win over McIlroy in Minnesota four years ago, should help calm Reed’s nerves in the final round. But this is still his first time being on the cusp of glory as a major tournament enters its final 18 holes, while McIlroy boasts plenty of experience in such situations, and has the prospect of claiming the career Grand Slam for additional motivation.

Reed will begin the day at minus-14, while McIlroy trails by three shots at 11-under-par. Should either of the top two falter in the closing session, the group waiting to pounce includes 2015 Players Championship winner Rickie Fowler (-9), 2017 European Tour Rookie of the Year Jon Rahm (-8), and 2016 British Open champion Henrik Stenson (-7).