Born in Mount Clemens, Michigan, Clark was signed by his hometown Detroit Tigers in 1965, after graduating from Redford Union High School and just prior to the institution of the Major League Baseball Draft.

Clark won 12 games, tying him with staff ace Jim McGlothlin and closer Minnie Rojas for the team lead in victories.

The following year, 1968, saw Clark lose nine of his first ten decisions (despite a respectable 3.27 earned run average) and drop out of the Angel starting rotation in early July.

But the Angels recalled him in June 1971, and in his third appearance and second starting assignment, Clark tossed another two-hit shutout, this time against the eventual division champion Oakland Athletics at Anaheim Stadium on July 2.

But he posted a 4–9 record and a 4.51 earned run average and during the offseason his contract was sold to the Philadelphia Phillies' organization, where he spent 1973 at Triple-A before leaving baseball.