ATLANTA -- The Washington Nationals placed third baseman Ryan Zimmerman on the 15-day disabled list Sunday with a broken right thumb.
Infielder Zach Walters was recalled from Triple-A Syracuse to take Zimmerman's spot on the 25-man roster.
Zimmerman, who's expected to miss between four to six weeks, was injured in the fifth inning Saturday while diving back to second base and getting picked off.
General manager Mike Rizzo said Zimmerman will see a hand specialist at the Cleveland Clinic on Monday.
The Nationals received some good news Sunday when right fielder Jayson Werth returned to the lineup. A sore groin kept Werth from playing in the field Saturday. He singled as a pinch-hitter in the eighth.
Center fielder Denard Span is on the seven-day disabled list because of concussion symptoms (see full story).
Reds: Latos won't throw for 10-14 days
CINCINNATI -- Reds starter Mat Latos was diagnosed with a strained right forearm on Sunday and won't be allowed to throw for 10-14 days.
Cincinnati's No. 2 starter has been trying to come back from surgery to repair torn cartilage in his left knee on Feb. 14. He was getting close and made one rehab start in the minors. A second start was cancelled because of a sore elbow.
Latos threw in the bullpen on Friday and felt soreness in his forearm, a new problem. He went for an MRI on Saturday.
"It's more time off to let it recover, let is simmer down, get the inflammation out of there and then start back up," manager Bryan Price said. "He'll keep working hard on staying in shape and doing all the other things he's capable of doing.
"But yeah, it's a setback. His timetable will definitely be pushed back fairly significantly (see full story)."
Rays: Cobb placed on DL with strained oblique
CINCINNATI -- The Tampa Bay Rays put right-hander Alex Cobb on the 15-day disabled list Sunday with a strained oblique in his left side, the second starter they've lost to injury in a week.
Cobb pitched seven innings in a 1-0 win over the Cincinnati Reds on Saturday. He's gone 15-1-3 innings without allowing a run.
The Rays called up left-hander Jeff Beliveau from Triple-A Durham to take his spot.
Left-hander Matt Moore went on the 15-day DL earlier in the week with a sore elbow. The Rays moved left-hander Cesar Ramos from the bullpen into the rotation to take his place and called up left-hander Erik Bedard after Saturday's game. Ramos and Bedard competed for a spot in the rotation during spring training (see full story).