Olsen to DL; Rodriguez likely out a couple days

After deciding this morning they would keep Scott Olsen on the roster while he rested his inflamed left shoulder, the Nationals changed their minds and put Olsen on the 15-day disabled list after the game. Team trainers want him to refrain from throwing for four or five days, and Olsen didn’t know if his next activity would be playing catch or throwing off a mound. So by the time he’s ready to pitch, he’ll have missed two starts and spent at least a week and a half out of games.

“It makes sense,” Olsen said. “Smart move.”

Olsen, who has a 2-2 record with a 3.77 ERA this season, would have been scheduled to pitch next Thursday in San Francisco. J.D. Martin, who pitched eight innings for Triple-A Syracuse on Saturday night, could make the start on regular rest. There’s also a possibility that reliever Miguel Batista could make the next start, though he said he hadn’t heard anything about the team asking him to start, and added the team would have to hold him out for several days before the start, which would give them a short bullpen.

The Nationals could also get by with four starters until May 29. Stephen Strasburg would be lined up to pitch that day, and could make his big-league debut in his hometown of San Diego. It’s long been assumed the Nationals would keep Strasburg in the minors until the first homestand in June, but Olsen’s injury could necessitate a change in plans, and May 29 would presumably be late enough to keep Strasburg clear of Super Two status; that’s the date Matt Wieters made his big-league debut for the Orioles last year.

Catcher Ivan Rodriguez left Saturday’s game after three innings, when he aggravated a lower back injury on a hard swing during his second at-bat. Rodriguez will miss tomorrow’s game and will get more rest with the team’s off-day on Monday, but wasn’t sure if he would return during the team’s series in San Francisco or San Diego.