1875 — Aristides wins the first Kentucky Derby by one-quarter length over Volcano. The day marks the opening of Churchill Downs with an estimated 10,000 spectators witnessing the first Derby. Aristides is ridden and trained by African Americans Oliver Lewis and Ansel Williamson, respectively.
1915 — Rhine Maiden wins the Preakness Stakes to produce the only Kentucky Derby-Preakness wins by fillies in the same year. The 1915 Derby was won by Regret, who did not compete in the Preakness.
1925 — Tris Speaker of the Cleveland Indians collects his 3,000th career hit off Tom Zachry in a 2-1 loss to the Washington Senators.
1930 — Gallant Fox wins the Kentucky Derby by two lengths over Gallant Knight to give Earl Sande his third Derby win.
1970 — Hank Aaron gets an infield single off Cincinnati’s Wayne Simpson for his 3,000th hit.
1975 — 23-1 long shot Master Derby, ridden by Darrel McHargue, beats favored Foolish Pleasure by a length in the Preakness Stakes.
1979 — Dave Kingman of the Cubs hits three home runs, and Mike Schmidt of the Phillies hits two, as Philadelphia beats Chicago, 23-22, in 10 innings at Wrigley Field.