Joba Chamberlain is now throwing off a half-mound

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According to the Associated Press, Joba Chamberlain has begun throwing off a half-mound as he continues his rehabilitation process from Tommy John surgery.

Yesterday’s throwing session took place at the Yankees’ minor league complex in Tampa, Florida. Chamberlain threw off a five-inch mound with Yankees’ pitching coach Larry Rothschild and team vice president Billy Connors in attendance.

Chamberlain posted a 2.83 ERA and 24/7 K/BB ratio over 28 2/3 innings before going under the knife last June. The 26-year-old right-hander was arbitration-eligible for the second time this winter and agreed to a one-year, $1.675 million contract with New York last month. Barring any setbacks, he should be back in the Yankees’ bullpen at some point during the first half of the season.