Matthew Olson Guerrier (born August 2, 1978) is an American former professional baseball relief pitcher. He played in Major League Baseball (MLB) for the Minnesota Twins, Los Angeles Dodgers and Chicago Cubs. Amateur career A native of Cleveland, Ohio, Guerrier attended Shaker Heights High School. He was selected by the Kansas City Royals in the 33rd round (979th overall) of the 1996 Major League Baseball draft, but did not sign, opting instead to play college baseball at Kent State University. While at Kent State in 1997, he played collegiate summer baseball in the Cape Cod Baseball League for the Yarmouth-Dennis Red Sox. Professional career Chicago White Sox Guerrier was drafted by the Chicago White Sox in the 10th round (309th overall) of the 1999 MLB Draft. He pitched in the White Sox minor league system through 2001, reaching Triple-A with the Charlotte Knights. Pittsburgh Pirates On March 27, 2002, Guerrier was traded by the White Sox to the Pittsburgh Pirates for Dámaso Marte. He spent the next two seasons pitching in Triple-A for the Nashville Sounds. Minnesota Twins On November 20, 2003, Guerrier was selected off waivers by the Minnesota Twins. Guerrier made his Major League debut on June 17, 2004 against the Montreal Expos as the starting pitcher. He worked four innings and allowed two earned runs while striking out three. For the season, he appeared in nine games (two starts), going 0–1 with a 5.68 ERA. Guerrier did not pick up his first win until September 23, 2006 against the Baltimore Orioles. In 2007, he became a mainstay of the Twins bullpen, finishing the season 2–4 with one save and a 2.35 ERA in 73 relief appearances. In 2008, the Twins lost primary setup pitcher Pat Neshek to injury early in the season and Guerrier took over part of that role for a short time. He pitched poorly in the second half, however, sporting an 8.88 ERA. Guerrier made 76 appearances in 2008, finishing 6–9 with one save and a 5.19 ERA innings. He improved greatly in 2009, posting a 5–1 record with one save and a 2.36 ERA in 79 relief appearances. He also led the American League with 33 holds. Los Angeles Dodgers Guerrier agreed to a three-year deal with the Los Angeles Dodgers on December 16, 2010. He appeared in a team high 70 games for the Dodgers, the fifth straight season he pitched in