Two days after throwing a clean bullpen session Stephen Strasburg was scratched from his Thursday start as a precaution after he had some trouble getting loose while playing catch on Wednesday Nationals Manager Davey Johnson said.

Strasburg was also scratched from his last start last Friday because of right forearm tightness he felt the day before when he tried playing catch and toyed with new grips on a pitch. Strasburg will be pushed back to Saturday and Gio Gonzalez will start on Thursday on regular rest.

“In my book I don’t want to have anything bothering you the day before you pitch” Johnson said.

Strasburg had no issues this week after resting. He didn’t throw for two days and took anti-inflammatories. He felt nothing wrong in his forearm when he played catch on Sunday and then threw a bullpen session on Monday. But on Wednesday afternoon Strasburg “felt a little something” Johnson said.

“To be honest I wish I could figure out what it is what the reason is for it” Strasburg said. “I felt it just warming up today. I came in and literally just moved my hand around a little bit just did like some squeezing exercises and it went away. I went out and threw felt great. I don’t know what’s going on but I think it works better for the club to … give it a couple extra days let Gio and Jordan go ahead and get it done and get after it on Saturday.”

Once he started throwing Strasburg said he had no issues. “It felt good” he said. The discomfort occurs when he tries warming up.

“I don’t really know why it’s happening” he said. “But it happens. It’s like a strong cramp. I think it would put us in a bind if I went out there and felt it. We’d definitely be down some pitchers.”