Lo Duca said he didn't have any problems throwing the baseball.
He is hoping to be back in action right after the All-Star break, if not sooner.
In the next couple days, Lo Duca is anticipating being able to take some dry swings. He then will go through some soft-toss drills by the time the Nationals return to Washington next week.
"Throwing-wise, it's fine. I was trying to get a workout in," Lo Duca said. "The hand is getting better and stronger."
Bill Ladson is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.