As Ryan Zimmerman took his pregame fielding practice this week, Jeff Garber stood behind him and studied his throwing motion. Garber is the Nationals' infield coordinator, the coach who last year helped Zimmerman overhaul his mechanics on the fly. Garber, in the wake of multiple throwing errors by Zimmerman, had come to Nationals Park for a refresher.

"It wasn't like anything we have done in the past," Zimmerman said. "When he has a chance to swing in, he'll swing and we'll just talk and look at some video and make sure the stuff that we were doing before is still fresh in my mind, and I'm still doing it the right way. It's extremely just maintenance."