The Open Champion takes the course just after 6pm Irish time.
The second major of the year, the US Open, gets underway in New York today.
Shane Lowry will take the course just after 6pm this evening in the company of US Amateur champion Andy Ogletree and Gary Woodland.
Just before him, 2019 amateur champion James Sugrue tee's off alongside Lee Westwood and Bubba Watson.
Graeme McDowell's among the earlier starters at Winged Foot, playing with Lucas Glover and Matt Kuchar.
While Rory McIlroy also goes out early, just after 1pm with Adam Scott and Justin Rose.
McIlroy has embraced fatherhood recently, and that's helped place things in perspective:
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