Justin Thomas was off to a great start at the Genesis Invitational, as he struck a hole-in-one during the Pro-Am event that is held ahead of the tournament. To add to the already impressive feat, Thomas managed to hole the ball on the 16th hole of the Rivieria -- a hole that is known for its iconic shots.Justin Thomas drove the ball off the tee with the utmost confidence, and it went right into the hole. The entire crowd appreciated the shot, and Thomas himself seemed impressed. The World No. 21 will be looking to replicate something similar over the weekend, as he looks to win the Genesis Invitational.Ahead of the actual tournament, the Genesis Invitational hosts 2 Pro-Ams, which are held on Monday and Wednesday.Justin Thomas ready to play alongside Tiger Woods as groupings for Day 1 of Genesis Invitational exploredThe Genesis Invitational itself is a signature event on the PGA Tour this year, with a prize purse of $70 million. The field will consist of 70 talented golfers, including Scottie Scheffler, Rory McIlroy, Viktor Hovland and Max Homa.Tiger Woods will also be making his 2024 season debut at the Riviera this year, alongside his apparel line, Sun Day Red. He will be teeing off alongside Justin Thomas and Gary Woodland. Following are the groupings for Day 1 of the Genesis Invitational (via Golf.com):10:20 a.m. – Nicolai Højgaard, Chase Johnson10:32 a.m. – Charley Hoffman, Beau Hossler, Ben Griffin10:44 a.m. – Lucas Glover, Byeong Hun An, Adam Schenk10:56 a.m. – Emiliano Grillo, Russell Henley, Sungjae Im11:08 a.m. – Keegan Bradley, Tom Hoge, Harris English11:20 a.m. – Chris Kirk, Corey Conners, J.T. Poston11:32 a.m. – Adam Svensson, Seamus Power, Denny McCarthy11:44 a.m. – Cam Davis, Adam Hadwin, Cameron Young12:01 p.m. – Nick Taylor, Viktor Hovland, Sam Burns12:13 p.m. – Tom Kim, Patrick Cantlay, Jordan Spieth12:25 p.m. – Justin Thomas, Tiger Woods, Gary Woodland12:37 p.m. – Ludvig Åberg, Nick Hardy, Christiaan Bezuidenhout12:49 p.m. – Nick Dunlap, Grayson Murray1:01 p.m. – Will Zalatoris, Matt Kuchar, Sam Ryder1:13 p.m. – Luke List, J.J. Spaun, Kevin Yu1:25 p.m. – Jason Day, Tony Finau, Brendon Todd1:42 p.m. – Lee Hodges, Brian Harman, Hideki Matsuyama1:54 p.m. – Sepp Straka, Si Woo Kim, Andrew Putnam2:06 p.m. – Rickie Fowler, Mackenzie Hughes, Patrick Rodgers2:18 p.m. – Taylor Moore, Kurt Kitayama, Eric Cole2:30 p.m. – Sahith Theegala, Xander Schauffele, Tommy Fleetwood2:42 p.m. – Collin Morikawa, Matt Fitzpatrick, Scottie Scheffler2:54 p.m. – Wyndham Clark, Rory McIlroy, Max Homa3:06 p.m. – Adam Scott, Alex Smalley, Taylor MontgomerySince the tournament only consists of 70 players, all golfers will start from the first tee itself.