Adam Loewen, Canadian baseball player
Adam Alexander Loewen (born April 9, 1984) is a Canadian former professional baseball pitcher and outfielder. He pitched in Major League Baseball (MLB) for the Baltimore Orioles from 2006 to 2008, before converting to a position player and playing with the Toronto Blue Jays in 2011. After spending the next two seasons in the minors as a position player, Loewen converted back to being a pitcher, and was called up to the Philadelphia Phillies in August 2015. He pitched for the Arizona Diamondbacks in 2016.

Though there have been full-time pitchers who have converted to full-time position players, and vice versa, Loewen's three stage career (converting from full-time pitcher to full-time position player and back to full-time pitcher) is unique in major league history.