LaRoche, who forgot to bring his bats into the dugout, decided to use Jayson Werth's bat. LaRoche, who broke one of Werth's bats early in the count, grabbed another one of Werth's bats and hit a two-run home run over the left-field wall to tie the score at 2.
"He has a long list of problems. He is pretty banged up," Werth said. "He is doing everything he can to get better."
LaRoche was heroic in the 12th inning against Brandon League. With the bases loaded, LaRoche didn't know if he could swing the bat. An inning earlier, he was hit on the left elbow by Dodgers right-hander Jamey Wright. LaRoche thought about laying down a bunt, but he managed to hit a single to left field, scoring Rendon and Werth.
"He was having a real difficult time swinging the bat," Williams said about LaRoche. "At that point we didn't have anybody else. We have Wilson [Ramos], but we don't want to use him."
The game was tied at 5 in the 14th inning, when the Nationals rallied against right-hander Kevin Correia. With runners on first and third, LaRoche hit into a fielder's choice but Ian Desmond scored on the play. LaRoche ended up with five RBIs in the game.
It's not known if LaRoche can play Friday against the Phillies. It helps the Nationals have a day off Thursday.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.