Eduardo Nunez is scheduled to undergo an MRI on his injured right hamstring.
Buster Posey went 1-for-3 and delivered a two-run single as the Giants fell to the Padres in San Diego on Sunday.
Ty Blach struggled in his spot start against the Padres on Sunday, allowing two runs on four hits across three innings.
Brandon Crawford (finger) is back in the Giants' lineup Sunday.
Madison Bumgarner escaped with a no-decision after allowing five runs in six innings but the Giants went on to beat the Padres 9-6 in extra innings on Saturday.
Sergio Romo gave up a base hit in the 10th inning but was able to protect a three-run lead to earn the save against the Padres on Saturday.
Angel Pagan went 3-for-5 with an RBI, stole a base and scored a run in the Giants' extra-inning win on Saturday.
Brandon Crawford (finger) will try to take batting practice on Saturday.
Ty Blach will start Sunday against the Padres.
Matt Reynolds gave up four runs without retiring a batter after entering Friday's game against the Padres.
Brandon Crawford (finger) could return to the Giants lineup on Sunday.
Brandon Crawford (finger) remains out of the Giants starting lineup on Friday.
Sergio Romo earned his second save of the season with a scoreless ninth inning in Thursday's 2-1 win over the Padres.
Jeff Samardzija pitched immaculately in Thursday's 2-1 win over the Padres, tossing seven innings of four-hit, shutout ball.
Giants manager Bruce Bochy said Thursday that there is still a chance Johnny Cueto makes his scheduled start against the Padres on Sunday.