 During his three seasons in the major leagues (1995–1997), he played for the Chicago White Sox.Born in Miami, Florida, Thomas played college baseball for the University of Maine Black Bears under head coach John Winkin.In 1991, he was named conference pitcher of the year, and played collegiate summer baseball in the Cape Cod Baseball League for the Yarmouth-Dennis Red Sox, where he was named outstanding pitcher at the league's annual all-star game.