"I feel great," said Moss, who underwent surgery in Boston during the May 3rd game and wound up missing just two weeks of playing time.
Moss had just returned from playing three games at extended spring training in Fort Myers, Fla., two weeks after being stricken with what he first thought was food poisoning. The next step is a rehab assignment at Pawtucket, starting on Thursday, and he may wind up being optioned back to the Triple-A team.
"Whatever happens, happens," Moss said. "I'm just glad to be able to play again."
Moss, playing two games at first base and one in the outfield, went 8-for-13 with a double, triple, home run, five RBIs and two walks at extended spring.
"Everything felt great," he said, noting that there have been no limitations placed on him in terms of how he plays the game -- diving for a ball, etc.
His quick comeback has been impressive.
"Boy, he's made some kind of recovery," said manager Terry Francona. "That's pretty cool. He's jumping around. He had a bunch of hits. ... He'll work out with us today, be examined and go to Pawtucket."
Moss was sore when he was discharged from Massachusetts General Hospital the day after his surgery, but he started feeling better as soon as he started pushing things.
"The progression was really good once I started swinging," he said.
Asked if he missed the removed body part, he said, "I feel a little bit lighter, but other than that, I don't miss it."
Moss was batting .286 with two home runs and three RBIs in six games with the Red Sox. The second of those homers came the night before the surgery, when he also scored from first place on a hit and threw out a baserunner.
Mike Shalin is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.