Whisenhunt (foot) returned to Triple-A Sacramento and started Saturday versus Tacoma. He allowed three runs on four hits and a walk while striking out four over three innings in a no-decision.

Whisenhunt has made two rehab starts for Single-A San Jose since landing on Triple-A Sacramento's 7-day injured list July 22 with a sore foot, MLB.com reports.

The Giants reassigned Whisenhunt (elbow) to minor-league camp Wednesday, Alex Pavlovic of NBC Sports Bay Area reports.

Whisenhunt (elbow) will face hitters Thursday, Susan Slusser of the San Francisco Chronicle reports.

Double-A Richmond placed Whisenhunt on its 7-day injured list Friday after he was diagnosed with a left elbow sprain, John Shea of the San Francisco Chronicle reports.

Whisenhunt has a 4.97 ERA, 1.66 WHIP and a 19:10 K:BB in 12.2 innings through four starts for Double-A Richmond.