NEW YORK - Joba Chamberlain raised his oversized paws, shook his shaggy brown mane and let out a feeble roar. Looking and acting every bit the Cowardly Lion, the big reliever was ready for a scrap Monday. Put 'em up! Put 'em up!" he said, playfully challenging Jason Giambi and Mike Mussina. No takers they were laughing too hard at Chamberlain's head-to-toe costume. .
