1903 — Flocarline becomes the first filly to win the Preakness Stakes.
1908 — Jockey Joe Notter misjudges the finish of the Belmont Stakes and eases up on his mount, Colin, whose career record to that point was 13-for-13. Notter recovers from his mistake and holds off Fair Play, who came within a head of defeating Colin. When he retired, Colin’s record stood at 15 wins in as many starts.
1911 — Ray Harroun wins the first Indianapolis 500 in 6 hours, 42 minutes and 8 seconds with an average speed of 74.59 mph.