"The second inning was definitely better than the first," he said.
He used his full arsenal of pitches and will start in Stockton on Friday with Class A San Jose. Giants manager Bruce Bochy said Vogelsong is expected to throw 40 to 45 pitches in the outing.
"He threw well," Bochy said. "He felt good about how he threw. That's a nice step to coming back here."
Bochy added that Vogelsong will return to San Francisco after Friday's start and will travel with the team to the White House on Monday prior to the club's three-game series in Philadelphia. He will then continue his rehab assignment with nearby Double-A Richmond.