"Our guys will keep tabs on him," Black said.
It was the first game action for Gyorko since June 26, when he attempted his first rehab assignment in Triple-A but had to leave the game with tightness in his right leg.
Since then, the Padres have been cautionary with Gyorko to avoid another setback.
He's been on the disabled list since June 10 with a right groin strain and had been participating in full pregame activities as well as doing some extra running since the team returned home Monday.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. Jamal Collier is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.