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.
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.
2012—Hall of Famer Johnny Petraglia becomes the first player in Professional Bowlers Association history to win a national or senior tour title in six decades, beating Ron Mohr 220-204 in the PBA Senior Dayton Classic. The 65-year-old Petraglia won the first of his 14 PBA national tour titles in 1966 in Fort Smith, Ark., at the age of 19. Dick Weber also won PBA titles in six decades, but his mark includes a PBA regional title.—The Associated Press