Check out these threesomes:
9:44 AM CDT - Wyndham Clark, Hideki Matsuyama, Tommy Fleetwood - world ranked #5, 12 and 14
10:11 AM CDT - Scottie Scheffler, Rory McIlroy, Ludvig Aberg - world ranked #1, 3 and 4
11:55 AM CDT - Xander Scauflele, Victor Hovland, John Rahm - world ranked #2, 7 and 10
12:06 PM CDT - Collin Morikawa, Matt Fitzpatrick, some French dude named Matthieu Pavon - #6, 22 and 23
Same threesomes on Day 2, just tee times change. Can't find info for round 3 and 4, but there is no cut - all 60 player play all 4 rounds
9:44 AM CDT - Wyndham Clark, Hideki Matsuyama, Tommy Fleetwood - world ranked #5, 12 and 14
10:11 AM CDT - Scottie Scheffler, Rory McIlroy, Ludvig Aberg - world ranked #1, 3 and 4
11:55 AM CDT - Xander Scauflele, Victor Hovland, John Rahm - world ranked #2, 7 and 10
12:06 PM CDT - Collin Morikawa, Matt Fitzpatrick, some French dude named Matthieu Pavon - #6, 22 and 23
Same threesomes on Day 2, just tee times change. Can't find info for round 3 and 4, but there is no cut - all 60 player play all 4 rounds