Event Established for Date Round Name Nationality Time Record Day Men's 100 metre breaststroke (same) 6 August Heats Adam Peaty Great Britain 57.55 WR 1 Men's 100 metre breaststroke (same) 7 August Final Adam Peaty Great Britain 57.13 WR 2 Men's 100 metre backstroke (same) 8 August Final Ryan Murphy United States 51.97 OR 3 Men's 200 metre breaststroke (same) 9 August Semifinal Ippei Watanabe Japan 2:07.22 OR 4 Men's 100 metre butterfly (same) 12 August Final Joseph Schooling Singapore 50.39 OR 7 Men's 4 × 100 metre medley relay Men's 100 metre backstroke 13 August Final Ryan Murphy United States 51.85 r WR 8 Men's 4 × 100 metre medley relay (same) 13 August Final Ryan Murphy (51.85) Cody Miller (59.03) Michael Phelps (50.33) Nathan Adrian (46.74) United States 3:27.95 OR 8