Marco Scutaro went 0-for-3 with two walks Wednesday against the Nationals, snapping his 19-game hitting streak.
Brandon Belt is out of Wednesday's lineup due to back tightness.
Pablo Sandoval is out of Wednesday's lineup against the Nationals due to illness.
Pablo Sandoval hit a walkoff homer off Yunesky Maya in the 10th inning Tuesday as the Giants beat the Nationals 4-2.
Santiago Casilla will have the cyst on his right knee examined by a specialist on Wednesday.
Giants placed RHP Santiago Casilla on the 15-day disabled list with a cyst on his right knee.
Giants placed RHP Ryan Vogelsong on the 15-day disabled list with a fractured right hand.
Giants recalled RHP Sandy Rosario from Triple-A Fresno.
Giants recalled 1B Brett Pill from Triple-A Fresno.
Angel Pagan went 2-for-5 with a double and three RBI in Monday's 8-0 victory against the Nationals.
Andres Torres went 3-for-5 with a double, an RBI and a run scored in Monday's win against Washington.
Brandon Belt went 4-for-5 with his sixth home run of the season and four runs scored in Monday's 8-0 blowout of the Nationals.
Ryan Vogelsong was diagnosed with a fractured right hand.
Ryan Vogelsong left Monday's start against the Nationals after getting hit on the right hand by a pitch while swinging.
Barry Zito allowed five runs on 11 hits over 5 2/3 innings in his start Sunday against the Rockies.