Matt Kilroy, American baseball player (died 1940)

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.

June 21 is the 172nd day of the year in the Gregorian calendar; 193 days remain until the end of the year.