The group set to attract the large majority of the crowd at Southern Hills is undoubtedly the star trio of Rory McIlroy, Tiger Woods and Jordan Spieth.
Each of them has their own compelling story ahead of this year's USPGA Championship.
McIlroy seems to be trending towards ending his eight-year major drought after a scintillating final round 64 at the Masters to finish in second place.
Since then a fifth place finish at the Wells Fargo Championship has seemingly primed the Holywood man for a run at collecting his third Wanamaker Trophy.
McIlroy will be joined by a man last seen in competitive action at the Masters, Tiger Woods. The 46-year-old defied the expectations of many to make the cut at Augusta, and, as is always said of the 15-time major winner, he won't be here to make up the numbers.
The three-ball is completed by Jordan Spieth, who is looking to complete a career grand slam of the major.
The American couldn't be better form either. After winning the RBC Heritage Title, he finished second behind KH Lee in last week's AT&T Byron Nelson Championship. Irish Mirror columnist Gary Murphy has tipped him to go very close this week.
In equally good form is Offaly man Shane Lowry. The former Open champion has seemingly been in contention every time he has teed it up of late.
After a three-week break he goes out in a star-studded group alongside two-time USPGA winner Brooks Koepka and former Masters champion Adam Scott.
Round one tee times
- All times Irish time; USA unless stated; CP denotes club professional
Starting on the 1st hole
1300 John Daly, Shaun Micheel, Y.E Yang (Kor)
1311 Takumi Kanaya (Jpn), Matthew Borchert (CP), Troy Meritt
1322 Dean Burmester (Rsa), Kyle Mendoz (CP), Chris Kirk
1333 Nic Ishee, Mito Pereira (Chi), Sam Horsfield (Eng)
1344 Kevin Streelman, Shaun Norris (Rsa), Carlos Ortiz (Mex)
1355 Matt Kuchar, Cam Davis (Aus), Rikuya Hoshino (Jpn)
1406 Stewart Cink, Jason Dufner, Padraig Harrington (Irl)
1417 Kramer Hickok, Abraham Ancer (Mex), Thomas Pieters (Bel)
1428 Richard Bland (Eng), Matt Jones (Aus), Garrick Higgo (Rsa)
1439 Beau Hossler, Tom Hoge, Si Woo Kim (Kor)
1450 Shawn Warren (CP), Pablo Larrazabal (Esp), Ryan Fox (Nzl)
1501 Zac Oakley (CP), Yuki Inamori (Jpn), Sebastian Munoz (Col)
1512 Brendan Steele, Casey Pyne (CP), Bio Kim (Kor)
1830 Ryan Brehm, Wyatt Worthington II (CP), Min Woo Lee (Aus)
1841 Nicolai Hojgaard (Den), Sean McCarty (CP), Justin Harding (Rsa)
1852 Cameron Tringale, Hudson Swafford, Adam Hadwin (Can)
1903 Shane Lowry (Irl) , Brooks Koepka, Adam Scott (Aus)
1914 Dustin Johnson, Patrick Cantlay, Justin Thomas
1925 Jason Day (Aus), Rickie Fowler, Harold Varner III
1936 Jon Rahm (Esp), Collin Morikawa, Scottie Scheffler
1947 Daniel Berger, Louis Oosthuizen (Rsa), Ian Poulter
1958 Kevin Kisner, Tommy Fleetwood (Eng), Billy Horschel
2009 Sergio Garcia (Esp), Charl Schwartzel (Rsa), Matt Fitzpatrick (Eng)
2020 Harry Higgs, Joaquin Niemann (Chi), Erik van Rooyen (Rsa)
2031 Alex Beach (CP), Bernd Wiesberger (Aut), Jhonattan Vegas (Ven)
2042 Jared Jones (CP), Aaron Wise, Joel Dahmen
Starting at the 10th hole
1305 Ryan Palmer, Robert MacIntyre (Sco), Alex Noren (Swe)
1316 Adri Arnaus (Esp), Colin Inglis (CP), Jinichiro Koruma (Jpn)
1327 Mackenzie Hughes (Can), Michael Block (CP), Sadom Kaewkanjana (Tha)
1338 Hideki Matsuyama (Jpn), Xander Schauffele, Tony Finau
1349 Tyrrell Hatton (Eng), Bryson DeChambeau, Max Homa
1400 Viktor Hovland (Nor), Will Zalatoris, Cameron Smith (Aus)
1411 Jordan Spieth, Rory McIlroy (NIR), Tiger Woods
1422 Patrick Reed, Justin Rose (Eng), Bubba Watson
1433 Kevin Na, Lucas Glover, Daniel van Tonder (Rsa)
1444 Cameron Young, Sam Burns, Davis Riley
1455 Francesco Molinari (Ita), Lee Westwood (Eng), Gary Woodland
1506 Brian Harman, Ryan Vermeer (CP), Oliver Bekker (Rsa)
1517 Dylan Newman (CP), Lanto Griffin, Laurie Canter (Eng)
1825 Brandon Bingaman (CP), Talor Gooch, Ryosuke Kinoshita (Jpn)
1836 Tim Feenstra (CP), Anirban Lahiri (Ind), K.H Lee (Kor)
1847 Rich Beem, Jesse Mueller (CP), Alex Cejka (Ger)
1858 Russell Knox (Sco), Seamus Power (Irl) , Scott Stallings
1909 Jason Kokrak, Corey Conners (Can), Christiaan Bezuidenhout (Rsa)
1920 Martin Kaymer (Ger), Marc Leishman (Aus), Keegan Bradley
1931 Zach Johnson, Russell Henley, Cameron Champ
1942 Webb Simpson, Branden Grace (Rsa), Henrik Stenson (Swe)
1953 Sepp Straka (Aut), J.J Spaun, Adam Schenk
2004 Matthew Wolff, Joohyung Kim (Kor), Keith Mitchell
2015 Chad Ramey, Austin Hurt (CP) Lucas Herbert (Aus)
2026 Tyler Collet (CP), Chan Kim, Maverick McNealy
2037 Luke List, Paul Dickinson (CP), Patton Kizzire
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