TUESDAY: Zimmerman will not need surgery, which is good news for the long term but does not shorten his timetable to return, Dan Kolko of MASNsports.com reports on Twitter.

SATURDAY: Nationals third baseman Ryan Zimmerman has fractured his right thumb and will miss four to six weeks, Mark Zuckerman of CSNWashington.com tweets. Zimmerman left tonight's matchup with the Braves early after injuring the thumb.

The development is a significant blow for the Nationals. Zimmerman was one of the majors' top hitters in the early going, posting a Herculean .355/.382/.613 line in nine games.

Fortunately, the Nats have several talented infielders on hand who should be able to help carry the team in Zimmerman's absence. Anthony Rendon appears likely to shift from second to third, his natural position, as a replacement, while Danny Espinosa could be adequate as a temporary solution at the keystone. Espinosa struggled mightily in 2013, but he's off to a hot start for the Nats this season, triple-slashing .294/.368/.471.

Looking further ahead, the injury may have implications for the third baseman's ability to stay healthy long-term. Zimmerman has managed 145 and 147 games in the previous two seasons, but he's locked into a deal through 2019 and has missed significant time in the past. Zimmerman's shoulder was described as "arthritic," then "degenerative" by manager Matt Williams in recent interviews, and despite 2012 surgery, completing the long throws across the diamond has been a struggle at times. Moving Zimmerman to first base to try and insulate him from nagging injuries could be one solution, but Adam LaRoche occupies that position for the Nationals at present.