Lo Duca revealed during the game that third baseman Ryan Zimmerman was playing with a sore left shoulder.
Lo Duca was working out in the Nationals clubhouse when a representative from the Mid-Atlantic Sports Network asked him and Rijo to appear with play-by-play man Johnny Holliday.
"I had a good time. It was fun," Lo Duca said. "It's definitely a different perspective watching the game. It does look a lot easier on TV."
Lo Duca is not sure if he wants to be a TV analyst once his playing days are over. He acknowledged he wants to play a few more years in the big leagues.
Lo Duca, who is on the disabled list due to a fractured right hand, is expected to return to action after the All-Star break.
Bill Ladson is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.