Dyson gave up three runs on four hits over an inning in Wednesday's 7-3 loss to Arizona.

Posey went 2-for-4 with a two-run home run in a 7-3 loss to the Diamondbacks on Wednesday.

Manager Bruce Bochy said Jackson exited Wednesday's game against the Diamondbacks in the seventh inning because of groin tightness, Alex Pavlovic of NBC Sports Bay Area reports.

Williamson is hitting very well at the Triple-A level and is pushing for a call-up, Henry Schulman of the San Francisco Chronicle reports.

Belt is out of the lineup against Arizona on Wednesday, Jody Jackson of Fox Sports Arizona reports.

Smith will join High-A San Jose for a rehab stint Thursday, Alex Pavlovic of NBC Sports Bay Area reports.