Scott Houston McGregor (born January 18, 1954) is an American former professional baseball player and coach. He played his entire career in Major League Baseball as a left-handed pitcher for the Baltimore Orioles from 1976 to 1988. McGregor was an integral member of the Orioles team that won the 1983 World Series, pitching a complete game shut out to clinch the series victory. Known for constantly changing the speeds of his pitches, McGregor was a 20-game winner in 1980 and was named an American League (AL) All-Star in 1981.