DeMuth in 2008
|Born: May 30, 1956|
|June 3, 1983|
|Career highlights and awards|
DeMuth advanced through the minor leagues to the Triple-A Pacific Coast League before joining the National League staff full-time June 3, 1983. He continued umpiring in the National League until the umpiring staffs of the American and National Leagues merged in 2000. He has been a crew chief since 1999. DeMuth has worn the uniform number 32 throughout his career.
His postseason assignments include 11 Division Series (1996, 1997, 1999, 2001, 2008, 2009, 2010, 2012, 2013, and 2015), 5 League Championship Series (1991, 1995, 2000, 2002 and 2007), and 5 World Series (1993, 1998, 2001, 2009 and 2013).
DeMuth was the home plate umpire for Game 6 of the 1993 World Series; a game memorable for Joe Carter's series-ending home run in the bottom of the ninth inning.
DeMuth was the third base umpire for the game between the San Francisco Giants and the San Diego Padres on August 4, 2007. In the top of the second inning at San Diego, Barry Bonds of the Giants hit his 755th career home run off Clay Hensley, tying Hank Aaron for first all-time.
DeMuth was the home plate umpire for the game between the San Francisco Giants and the New York Yankees on September 20, 2013. In the bottom of the seventh inning, Alex Rodriguez of the Yankees hit his 24th career grand slam off George Kontos, passing Lou Gehrig for first all-time.
DeMuth was the second base umpire for Game 1 of the 2013 World Series and in the bottom of the first inning called Boston second baseman Dustin Pedroia out at second after thinking St. Louis shortstop Pete Kozma caught the ball and was grabbing it from his glove with his free hand, but, after a huddle, the umpires correctly ruled that the ball bounced off the tip of Kozma's glove and ruled Pedroia safe at second, loading the bases for Mike Napoli who then hit a 3-run double.
DeMuth was the home plate umpire for a no-hitter pitched by Jake Arrieta between the Chicago Cubs and the Cincinnati Reds on April 21, 2016. This was Arrieta's 2nd career no hitter. Chicago won the game, 16–0.