Ralph Onis is a right-handed former professional baseball player with a batting average of 1.0.
Manuel Dominguez "Ralph" Onis (October 24, 1908 in Tampa, Florida  January 4, 1995), nicknamed "Curly", was a professional baseball player who played catcher in one game for the Brooklyn Dodgers on April 27, 1935. Onis singled in his only at-bat for a rare career batting average of 1.000. Batted: Right
Threw: Right Batted: Right Threw: Right 1.000 
