Fontenot started the final two games of the NL Division Series against Atlanta, each of which the Giants won, 3-2. Both Fontenot and Sandoval went 1-for-6 with an error in their appearances.
Bochy admitted that starting Fontenot over Sandoval was "a tough call." He added that Sandoval could start Sunday "or one or two of these games." Past performances don't appear to be much of a factor. Sandoval is 2-for-9 (.222) lifetime against Roy Oswalt, Philadelphia's Game 2 starter, compared to Fontenot's .238 (5-for-21).
Bochy mentioned a third infield option: starting Edgar Renteria at shortstop and Juan Uribe at third base. Renteria singled in each of his NLDS plate appearances. It's easy to envision Bochy stationing that pair on the infield's left side in Tuesday's Game 3 at San Francisco, where the Giants will confront left-hander Cole Hamels.