Posey devoted part of his offseason to improving his explosiveness in springing from his catcher's crouch, which has enhanced his throwing ability. Manager Bruce Bochy noted that Giants pitchers have been more vigilant at holding runners on base, too.
"Last year, that was not a strength of ours," Bochy said.
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.