 He played for 12 different minor league clubs from 1940 to 1959, and in 12 years at Triple-A he hit .313.Rapp served as a scout from 1960 to 1989 for the Houston Colt .45s/Astros, Kansas City Royals, Montreal Expos and Cincinnati Reds.With Kansas City, he was responsible for the signing of Mark Gubicza.