Matt Kilroy
Matthew Aloysius "Matches" Kilroy was an American left-handed pitcher in Major League Baseball. During his rookie season in 1886, he had 513 strikeouts, which remains the MLB single-season record.
21 June 1866
Born on the same birth day (21 June): Al Hirschfeld • Derrick Coleman • Flavio Roma • Malcolm Rifkind • Marcella Detroit • Marjorie Margolies • Michael Gross (actor) • O. C. Smith • Paweł Bryliński
Born in the same month (June 1866): Bartholomeus Roodenburch • Eloísa Díaz • George Broadhurst • George Herbert, 5th Earl of Carnarvon • Germanos Karavangelis • Jack O'Connor (catcher) • James Burns (cricketer) • Miina Sillanpää