Jacob Edward Peavy (born May 31, 1981) is a retired professional baseball pitcher.
He played in Major League Baseball (MLB) for the San Diego Padres, Chicago White Sox, Boston Red Sox, and San Francisco Giants.
He batted and threw right-handed.
While with the Padres, he won the 2007 NL Cy Young Award after recording the Pitching Triple Crown that year.
He was traded from the White Sox to the Red Sox in 2013 and helped them to a World Series title later that season.
A year later, he was traded to the San Francisco Giants, where he helped them win a World Series title later in the season.
He became the first starting pitcher in Major League history to win two consecutive World Series with two teams in two leagues.
He is one of seven players in MLB history to have won back-to back World Series on different teams (Ben Zobrist, Jack Morris, Bill Skowron, Clem Labine, Don Gullett, and Ryan Theriot).
Peavy wore the number 44 throughout his career.
When he was traded to the San Francisco Giants, he took number 43, as 44 was retired in honor of Willie McCovey.
After struggling in the middle of the 2014 season, he changed to 22.