VIERA, Fla., Feb. 20 -- Though his injured shoulder is healthy, Washington Nationals shortstop Cristian Guzman didn't throw during the club's first full-squad workouts Tuesday and will be held out until later in the week.

Guzman had an MRI exam on his surgically repaired right shoulder Monday, and team orthopedist Ben Shaffer said Tuesday that while shoulder is "structurally sound" and the torn labrum Guzman suffered last spring is "healed," the 28-year-old will be held back for now. Guzman said he had tendinitis in the shoulder.

"It's pretty typical that when you return from having any shoulder work . . . that you're going to have some mild symptoms as you ramp up your [throwing] program," Shaffer said, adding that such a development was "normal."

Guzman said he isn't supposed to throw or hit for three days.

"That's what they told me," he said. "I want to do it, but they said no, so that's it."

Shaffer would not predict whether Guzman would be ready to play in the Nationals' first spring training game March 2.

Clubhouse LeadersA chief objective for Manager Manny Acta will be to develop leadership, which he said will be handled by "a committee" featuring catcher Brian Schneider, third baseman Ryan Zimmerman, outfielder Austin Kearns and second baseman Felipe Lopez. Zimmerman, entering his second season, asked Acta for such a role. Tuesday, he showed he had a handle on last year's clubhouse dynamics.

"I don't think we were as much of a team as we're going to be this year," Zimmerman said. "I think some people didn't want to say things because they were afraid a person's feelings would get hurt and they wouldn't want to talk to them anymore, but I feel like the group that we have this year, people can say stuff to each other and they're not going to get upset and be mad at them for the rest of the season to where they won't talk to them." . . .

Infielder Ronnie Belliard, signed Sunday, arrived after the club's workout but will participate Wednesday. He said he had no problem accepting the backup role that is projected for him.

"I know what the deal is," he said.

However, Belliard declined to discuss the case in which a Missouri man is accused of trying to extort $150,000 from him to cover up an alleged affair Belliard had with the man's daughter.

"Maybe later on, you ask me that question, I give you an answer," he said.

Nice OPS

1B Larry Broadway's career on-base percentage plus slugging percentage (OPS) in the minor leagues is .843. Nick Johnson's major league OPS is .853.