- May 13 37th Kentucky Derby: George Archibald aboard Meridian wins in 2:05
- May 17 36th Preakness: Eddie Dugan aboard Watervale wins in 1:51
- May 22 Braves pitcher, Cliff Curtis, loses his 23rd game in a row
- May 30 1st Indianapolis 500: Ray Harroun driving a Marmon Wasp for Nordyke & Marmon Company comes out of retirement, wins inaugural event; average speed: 74.602 mph (120.060 km/h)
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