Heithoff, a rookie, emerged as one of the top closers in University of Evansville history. He collected 18 saves in his two years to rank second all-time in Evansville history and earned All-MVC pitching honors. In his collegiate career, Heithoff went 7-9 with a 3.59 ERA with 74 strikeouts against just 25 walks. He also can be a force at the plate. With the Purple Aces, Heithoff hit .268 with four home runs and 57 RBI.