Unless the Giants engineer some personnel moves, manager Bruce Bochy must operate with only two able-bodied substitutes: outfielder Justin Maxwell and catcher Andrew Susac, though Blanco would have been available to pinch-hit. On the other hand, the backup catcher is typically held in reserve unless installing him is absolutely necessary. Thus, Maxwell, who struck out as a pinch-hitter in the seventh inning, was the only sub Bochy could use freely.
Duffy hurt himself as he turned his ankle on first base during a first-inning pickoff attempt. He remained in the game and, somewhat remarkably, stole second base and advanced to third on a fly ball before scoring the Giants' second run. The National League Rookie of the Year candidate played the rest of the game without incident.
Bochy said that if Duffy had been forced to leave the game, catcher Buster Posey might have been switched to third base. Posey initially played shortstop at Florida State University before moving to catcher as a sophomore. Asked when he last fielded ground balls in practice, Posey guessed, "The Cape Cod League [for collegians in the summer], probably."
Posey said that he would have manned third base but admitted that if he had to play there, "I wouldn't have felt comfortable."
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, follow him on Twitter at @sfgiantsbeat and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.