Garza will spend the offseason at his California home.
"I still have to get my upper body strength back," the right-hander said. "I haven't thrown a ball. It's been a pain not to do it. I ordered a left-handed glove so I wouldn't do it, so I could go shag [fly balls]."
Garza's contract status also is to be determined. He has one more year of arbitration before he is a free agent. Right now, his focus is on pitching.
"[My contract] is the last thing I have to worry about," he said. "My job right now is to get ready for next season."