Bagwell tossed the pitch left-handed to Astros infielder Brett Wallace because of the degenerative right shoulder condition that forced him to retire after the 2005 season.
"Well, I can't throw right-handed, so I had to throw left-handed," Bagwell said. "It was fun. I wish we had more people here, and it's not for me, for the team. Times are tough right now, but we're going in the right direction. It's all good."
Bagwell has kept a low profile since deciding not to return as the team's hitting coach following the 2010 season, a job he held for the second half of the year. He's still listed in the team's media guide as a special assistant to the general manager.
When asked what role he'll play in the future, he was non-committal.
"I just want to wait and see what's going on and see what direction we're going in, and we'll [decide] at some point," he said.
Bagwell, who will be on the Hall of Fame ballot for a third time this offseason, was charged with an error when he threw the 24-karat gold leather covered ball with the Astros' 50th anniversary logo into the stands as he walked back to the dugout.