The first round of the Memorial Tournament ended on Thursday, June 6, at Muirfield Village Golf Club. As usual, the course designed by Jack Nicklaus was the protagonist, as only 25 players achieved scores under par.Adam Hadwin leads the Memorial Tournament after the first round with a score of 6 under. He is closely followed by several top favorites, including Scottie Scheffler and Xander Schauffele.2024 Memorial Tournament Day 1 LeaderboardBelow is the 2024 Memorial Tournament leaderboard after the first round (only members of the Top 50 were included):1 Adam Hadwin -62 Scottie Scheffler -5T3 Xander Schauffele -4T3 Ludvig Åberg -4T3 Corey Conners -4T3 Collin Morikawa -4T7 Viktor Hovland -3T7 Billy Horschel -3T7 Akshay Bhatia -3T7 Tommy Fleetwood -3T7 Seamus Power -3T12 Nick Dunlap -2T12 Emiliano Grillo -2T12 Eric Cole -2T12 Tom Kim -2T12 Keegan Bradley -2T12 Alex Noren -2T12 Rory McIlroy -2T19 Byeong Hun An -1T19 Victor Perez -1T19 Sam Burns -1T19 Tony Finau -1T19 Lee Hodges -1T19 Max Homa -1T19 Justin Thomas -1T26 Peter Malnati ET26 Adam Schenk ET26 Adam Svensson ET26 Tom Hoge ET26 Si Woo Kim ET26 Christiaan Bezuidenhout ET26 Thomas Detry ET26 Sepp Straka ET26 Jackson Koivun (a) ET35 Davis Thompson +1T35 Matt Fitzpatrick +1T35 Cam Davis +1T35 Chris Gotterup +1T35 Sahith Theegala +1T35 Russell Henley +1T35 Nick Taylor +1T35 Jason Day +1T35 Hideki Matsuyama +1T44 Shane Lowry +2T44 Will Zalatoris +2T44 Jordan Spieth +2T44 Taylor Pendrith +2T48 Stephan Jaeger +3T48 Matt Kuchar +3T48 Brendon Todd +3T48 Patrick Cantlay +3T48 J.T. Poston +3T48 Taylor Moore +3T48 Davis Riley +3Adam Hadwin's performance during the first round of the Memorial Tournament included eight birdies and two bogeys. Hadwin was very tight on the putting, not 3-putting any holes and 2-putting only eight of them.World No. 1 and top favorite to win the Memorial Tournament Scottie Scheffler is in second place, one stroke behind Hadwin. Scheffler's performance included seven birdies and one bogey.Defending champion Viktor Hovland played his round with one eagle, three birdies, and two bogeys for a score of 3 under.Jackson Koivun made his PGA Tour debut in this event, carding two birdies and two bogeys to finish the round in T26. Koivun won the 2024 Jack Nicklaus Award, which is presented to the NCAA Division I Player of The Year and comes with an invitation to participate in the Memorial Tournament.A week ago, Koivun, 18, led Auburn College to its first NCAA Match Play Team Championship title.