UPDATE AT 7:55 P.M. -- Olsen has now been placed on the 15-day DL with left shoulder tightness. A corresponding move will be announced tomorrow, but the Nats could probably call up a position player and use that extra body on the bench for a week until another starting pitcher is needed next Saturday.
UPDATE AT 3:54 P.M. -- Read the complete, updated story, with quotes from Olsen and Mike Rizzo's answer to the question of whether Stephen Strasburg could replace Olsen and start next Saturday in San Diego, on CSNwashington.com.
Scott Olsen has inflammation in his surgically repaired left shoulder and will miss his next scheduled start, though the Nationals won't make a decision about placing him on the disabled list for several days.
Olsen, who left last night's game after three innings due to tightness in his shoulder, had an MRI which revealed no structural damage, only inflammation near the back of his shoulder. It's a different area than the labrum, which Olsen tore last season.
He'll be restricted from throwing for four or five days, but the Nats can wait to decide their next move. Because they are off Monday, the Nats can pitch everyone on normal rest and won't need another starter until next Saturday (May 29) in San Diego.
The club will wait to decide who would replace Olsen if needed. Manager Jim Riggleman said the Nats could go with a reliever like Miguel Batista if the bullpen is not taxed before then.
For what it's worth, Stephen Strasburg (a San Diego native) is currently lined up to start for Class AAA Syracuse on Saturday on normal rest.
Riggleman said Olsen had actually been experiencing shoulder discomfort since his May 11 start in New York but insisted it was not enough to keep him from pitching. It wasn't until last night's game that the tightness had a tangible effect on his performance.
More to come...