Following his seventh season with the Athletics, Zito signed a seven-year deal with the Giants in December 2006. At the time, it was the largest contract ever given to a pitcher. He posted double-digit wins in his first three seasons, and in 2010 he helped San Francisco win their first championship since 1954. However, he struggled the last month of the season and he was left off the postseason roster. After sitting out much of the 2011 season with a foot and ankle injury, he came back in 2012 and flourished, finishing with a 15–8 record, his best season in a Giants uniform. The same October, Zito helped lead the Giants to their second World Series title in San Francisco history over the Detroit Tigers by going 2–0 with a 1.69 ERA in three postseason starts. In his first career World Series start, he outdueled Tigers' ace Justin Verlander in Game 1, setting the stage for San Francisco's sweep to their seventh World Series title in franchise history. Zito struggled in 2013 but received a standing ovation from the fans in his final appearance as a Giant. Following the year, he became a free agent. Zito, a philanthropist, founded "Strikeouts For Troops", a national non-profit that provides comforts of home and lifts the spirits and morale of injured troops as well as offering support to military families.