''He twisted his ankle a little bit, so we're going to have to see how he goes in the next couple of days and push him (back),'' Nationals manager Matt Williams said. ''He's a little sore, so we don't want to have any issues with him not feeling 100 percent.''
Williams did not think the injury was serious. Strasburg has not had an MRI.
It's the second time Strasburg has missed a Grapefruit League start. He was scratched from a scheduled March 12 start against the New York Mets because of an ingrown toenail, but threw in a minor league game.
A.J. Cole will start for Washington against Detroit.