Sergio Armando Mitre, born February 16, 1981, is an American former professional baseball pitcher. He grew up in Tijuana, Mexico, where he trained in the arts of kenpo, boxing, wrestling, and played baseball. Graduating from Montgomery High School, he went on to San Diego City College. Mitre was the Chicago Cubs 7th-round selection in the 2001 Major League Baseball Draft.
He was the second player out of the 2001 draft to make it to the majors with the Cubs, the first being Mark Prior. Mitre made his major league debut for the Cubs in 2003 after being called up from the West Tenn Diamond Jaxx (at the time, West Tenn was the Cubs’ Double-A affiliate). On June 14, 2005, he pitched his first complete game, along with his first shutout in a 14-0 victory over the Florida Marlins against Josh Beckett.
On December 7, 2005, Mitre and minor league pitchers Ricky Nolasco and Renyel Pinto were traded to the Florida Marlins for Juan Pierre. Mitre pitched 15 games for the Marlins in 2006. In the 2007 season, Mitre won a career-high five games. He also set career bests with 27 games played, 27 starts, 149.0 innings pitched and 80 strikeouts. Mitre had a streak of not allowing an earned run in 24.2 consecutive innings. This streak lasted five starts, beginning May 20 at Tampa and ending June 15 at Kansas City. He made Marlins history with his 1.12 ERA in May, the second lowest for a starting pitcher during May in Marlins history. Sergio began to see injury problems beginning in 2007 and had three stints on the disabled list, foreshadowing his 2008 season. On July 15, 2008, Mitre underwent Tommy John ligament replacement surgery to fix right forearm tightness. As is the case with all Tommy John surgery patients, he was expected to miss 12 – 18 months. He was released by the Marlins at the end of the 2008 season.
On November 3, Mitre signed a one-year minor league contract with the New York Yankees with an option for 2010. He returned to action, pitching well in nine starts for the Single-A Tampa Yankees and Triple-A Scranton/Wilkes-Barre Yankees. Replacing an injured Chien-Ming Wang, Mitre was called up to the majors to start against the Baltimore Orioles on Tuesday, July 21, 2009. Mitre pitched 5 2⁄3 innings, allowed 3 runs, and got the win. Sergio got his first World Series ring when the Yankees won their 27th World Series title. He recorded his first career save on August 19, 2010, pitching the last 3 innings of a Yankees 11-5 win over the Detroit Tigers.
After his MLB career, Sergio played baseball in Japan while continuing to rehab his shoulder. Eventually, he returned to California and founded the Elite Sports Training Academy where he now coaches.