 Earp was a pitcher for the Grand Rapids Chicks in a span of four years.One of the first successful underhand pitchers in the league, Earp was selected to the All-Star Team in her rookie season, recorded the second best single-season ERA and the second best career ERA in AAGPBL history, and helped Grand Rapids win their first Championship Title.She also hurled a no-hitter game and ranked between the top 10 in several pitching categories during her short stint in the league.