New York Yankees relief pitcher Joba Chamberlain, who injured his...

New York Yankees relief pitcher Joba Chamberlain, who injured his right ankle while jumping on a trampoline with his son, wears his hospital bracelets as he speaks to reporters in Tampa, Fla. (March 27, 2012) Credit: AP

Shortly after suffering an open dislocation of his right ankle in a trampoline accident March 22, Joba Chamberlain said, to mostly disbelieving ears, he would pitch again this season. He took another significant step forward Friday, throwing a 25-pitch bullpen session at the team’s minor-league complex in Tampa and, even more significant, running sprints in the outfield.

At the time of the accident, Chamberlain was ahead of schedule — on pace to return in early-to-mid-June — in his recovery from Tommy John surgery.

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