PHOENIX (AP)—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 yet unproven technique. Colon was nervous, but he responded and spent 2011 with the Yankees.

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

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

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

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