It's just 5 inches higher than the half-mound Joba Chamberlain had been throwing off, but it represented a big step in Joba Chamberlain's recovery from Tommy John surgery. Tuesday morning in a George M. Steinbrenner Field bullpen Chamberlain threw 16 pitches off a regulation-sized (10-inches high) mound and said it was a significant development. "It's the last step, I know I am on the mound and I can start spinning stuff,'' said Chamberlain, who was watched by manager Joe Girardi, pitching coach Larry Rothschild, guest instructor Andy Pettitte, David Wells and the Yankees' minor league staff.
Yankees reliever Joba throws off mound
New York Post | Feb 29