NEW YORK (WFAN) – Yankees reliever Joba Chamberlain threw 23 pitches on Tuesday for the Yankees’ rookie-level Gulf Coast League affiliate, pitching in his first live-game action in 13 months.

The fireballer pitched one inning, allowing no hits, no walks and one unearned run against a Pittsburgh Pirates rookie-league team in Bradenton, Florida. He struck out two batters and — more importantly — his fastball was clocked at 97 mph.

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“Just to feel comfortable and just to be in a game, I mean, really was the biggest thing,” the 26-year-old told Newsday after his appearance. “So I was very pleased.”

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He reportedly showed no signs of limping during wind sprints after his inning on the mound.

Chamberlain’s ankle was injured while playing with his son on a trampoline on March 22. The Nebraska native suffered a dislocated right ankle as a result of the accident, causing him to undergo surgery.

Prior to undergoing Tommy John surgery in 2011, Chamberlain went 2-0 with a 2.83 ERA in 28 2/3 innings pitched for the Yankees. In his short stint that season, the hard-throwing reliever recorded 24 strikeouts to just seven walks.

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If Joba does return in 2012, how effective do you think he’ll be for the Bombers? Sound off with your thoughts and comments in the section below…