Nationals right-hander Stephen Strasburg is dealing with a strained flexor mass in his right elbow but his UCL is in tact, trainer Paul Lessard said Thursday.
Strasburg had an MRI on the elbow earlier Thursday, one day after leaving a start in the third inning.
Lessard said the injury is not necessarily season-ending but offered no timetable for Strasburg's return.
"It's good to hear it wasn't what everybody was speculating," manager Dusty Baker said.
Strasburg felt a pinch in the back of his elbow and was forced to make an early exit in his first start since returning from the disabled list Wednesday night.