Nationals starter Stephen Strasburg threw a bullpen session on Saturday, testing the injury that forced him out of Tuesday's start.

Strasburg left after three innings on Tuesday with what he called "an alignment issue" beneath his shoulder blade. 

After his bullpen session, Strasburg declared himself good enough to pitch either Monday or Tuesday, per the Washington Post. He said he thought the issue was caused by overcompensation after he injured his ankle in spring training. After adjusting his mechanics, he said he's ready to go. 

Manager Matt Williams said that they'll evaluate how Strasburg feels on Sunday before scheduling his next start.