He has struggled this season, posting a 6.12 ERA in 30 appearances.A former closer for the Giants, Romo spent the previous nine seasons in San Francisco and won World Series titles in 2010, 2012 and 2014. His best season came in 2013, when he had 38 saves and a 2.54 ERA.Romo has a 2.77 career ERA and 84 saves.
He batted .237 with 14 home runs and 59 RBIs in 161 games over a three-year span with Boston and was released by the club on July 19.
Sandoval will attempt to get his career back on track in the Bay Area. He hit .294 with 106 homers and 462 RBIs in 869 games during his seven seasons with the Giants.
"I have always loved and appreciated the Giants organization, my Giants teammates and the fans of San Francisco," Sandoval said in a statement released by the team. "I have so many great memories and I want to thank the organization for giving me another chance to come back here. When I left the Giants in 2014, my comments were emotional, insensitive and misguided and I truly regret and apologize for my actions. I am committed to working hard to contributing to the success of the Giants".
Chris Haft /MLB.com
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