Wapnick was a right-handed pitcher who appeared in 10 games with Detroit and the White Sox during the 1990-91 seasons. Originally drafted by Toronto, Wapnick began the 1990 season with Detroit as a Rule 5 draft player. However, after appearing in four games, the Tigers returned Wapnick  to the Blue Jays. After being traded to the White Sox, he was 0-1 with a 1.80 ERA in five games in 1991. He injured his arm in 1992 during spring training, which was the beginning of the end of his career.