Colpaert came into eight games during 1970, all out of the bullpen, and proceeded to post a 1-0 record with a 5.91 earned run average over 10.2 innings pitched.
He spent eight years toiling in the Minors before that sole taste of the big leagues, pitching for the Baltimore Orioles Appleton D-Level team in 1962 as an 18-year-old before moving over the the Pittsburgh organization in 1963, where he’d stay through the 1972 season.
He’d stick around until 1974, playing for the Pawtucket Red Sox, getting into a dozen games before calling it a career, getting that one taste of the big time in 1970, leading to this card.