PHOENIX — Bartolo Colon had no idea how he would bounce back from a stem-cell procedure that saved his career. It saved his right shoulder, saved his elbow.

Two years ago, fat and bone marrow stem cells were collected from Colon and injected into his troublesome elbow and shoulder in an innovative technique. Colon responded and spent 2011 with the Yankees.

Now, Colon is getting a new start with the Athletics, whose pitchers and catchers reported to spring training yesterday.

The fact he is pitching another season with a fresh arm? “Incredible,” he said.

Colon received a handshake and hug from new teammate Jonny Gomes after completing his physical. The pitcher says he’s healthy and appreciates the opportunity at age 38.

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