The veteran has not missed a game since July 7 in Oakland.
“He’s a little worn down,” Bochy told reporters. “We’ll see if we can freshen him up. It’s evident when you watch him. He’s pretty beat up.”
Sandoval is batting .288 with 15 home runs and 64 RBIs in 135 games this season.
The Giants play the Colorado Rockies Wednesday afternoon. After an off day on Thursday, San Francisco begins a three game series in Detroit.
Entering Wednesday, the Giants are 76-63, two games back of the National League West-leading Los Angeles Dodgers. The Giants currently hold the first NL Wild Card spot.
- Sarah Barshop