Patrick John Underwood
- Bats Left, Throws Left
- Height 6' 0", Weight 175 lb.
- High School Kokomo High School
- Debut May 31, 1979
- Final Game June 21, 1983
- Born February 9, 1957 in Kokomo, IN USA
Pitcher Pat Underwood was selected by the Detroit Tigers as the second overall pick in the 1976 amateur draft. He made his major league debut on May 31, 1979, pitching against his brother Tom Underwood of the Toronto Blue Jays. Pat pitched 8 1/3 scoreless innings to get the win. He was the winning pitcher for the Tigers in the first game of the doubleheader against the Chicago White Sox at Comiskey Park on the infamous Disco Demolition Night on July 12th; there was no winning pitcher for the second game, as it was awarded to the Tigers by forfeit.
He retired as a player in 1985 due to an elbow injury and was inducted into the Indiana Baseball Hall of Fame in 2005.