Douglas Wildes Fister (born February 4, 1984) is an American former professional baseball pitcher.
He played in Major League Baseball (MLB) for the Seattle Mariners, Detroit Tigers, Washington Nationals, Houston Astros, Boston Red Sox, and Texas Rangers from 2009 through 2018.
Fister bats left-handed, and throws right-handed.
He was born in Merced, California and attended Golden Valley High School.
He then attended Merced College, and later Fresno State University.
He spent four seasons (2006–2009) in the Seattle Mariners minor league organization before being promoted to their Major League roster in 2009.