Ryan Zimmerman suffered a hamstring injury in Tuesday night’s game. (USA Today)

The Nationals put Ryan Zimmerman on the 15-day disabled list Wednesday and recalled infielder Zach Walters from Syracuse.

Zimmerman’s absence from the Nationals’ lineup card for today’s game against the Rockies was a signal that Tuesday night’s hamstring injury was not a minor one. This is Zimmerman’s  second trip to the DL this season: He missed 44 games with a broken right thumb.

The Nats are 33-19 with Zimmerman and 22-24 without him.

Adam Kilgore will be here with an update soon.