The American Express Round Four Tee Times

Nick Dunlap waves to the crowd during round three of the American Express 2024.

The American Express is set to have plenty of extra eyeballs on it come Sunday night as golf fans tune in to find out whether American amateur Nick Dunlap can become the first man since Phil Mickelson in 1991 to claim a PGA Tour title before turning pro.

Regardless of extremely low-scoring conditions across the trio of courses in La Quinta, California, Dunlap has made the game look all too easy and begins Sunday's action with a three-shot advantage over closest challenger, Sam Burns.

The US amateur champion put all those concerned with monitoring that magical 59 on red alert during Saturday's play at La Quinta Country Club, too, but fell agonisingly short on his way to a stunning round of 60. He will begin the final round on an incredible 27-under par.

But in terms of Dunlap's quest for a historic title, there is also the small matter of an in-form Justin Thomas - who is four shots back and in the final group - to contend with. Thomas struggled to find his A-game in 2023 but has emerged after the new year a seemingly-different player. Thomas was also in danger of hitting the 59 mark on Saturday but ended up with a 61 to leave himself on 23-under and remain dangerous.

Elsewhere, there are five players on 20-under - including PGA Tour Rookie of the Year Eric Cole and Team USA Ryder Cup member, Xander Schauffele. Cole tees off alongside the only player currently on 21-under, Christiaan Bezuidenhout and Si Woo Kim, who is also on -20. Schauffele will play the final 18 holes at the Stadium Course along with Adam Hadwin and JT Poston.

With one round to go @TheAmExGolf …1. Nick Dunlap (a) (-27)2. @SamBurns66 (-24)3. @JustinThomas34 (-23)4. @CBezGolf (-21)T5. Eric Cole (-20)T5. Si Woo KimT5. @AHadwinGolfT5. @JT_ThePostmanT5. @XSchauffeleJanuary 21, 2024

Although he is not in contention despite shooting 15-under so far, Australia's Min Woo Lee is among the earliest cluster of players to go out. Lee is in a group with Erik Barnes and Alex Smalley.

Below are the tee times and groupings for round four of The American Express.