"Just going to treat it today and hope it feels better tomorrow," Crawford said.
The left fielder felt soreness in his shoulder after making a throw in Wednesday night's game.
"I didn't feel a pop," Crawford said. "Sometimes when you throw, you feel soreness. You always have aches and pains, and you think it will just be gone tomorrow, like that. That's what I thought. The next day came, and I was sore. I tried to do all I could to play, and once I saw I couldn't do anything, I figured I better take care of it."
He felt the soreness before Thursday afternoon's game.
"I was warming up with B.J. [Upton], and it was difficult to play catch with B.J., even though we were at a short distance," Crawford said. "It wasn't good."
When asked whether he felt any improvement in his shoulder Friday, Crawford said, "Kind of like it was yesterday."
"One of those things where you have to keep trying to stretch it and get it loose," Crawford said. "We haven't even tried to start stretching it yet. So tomorrow, hopefully it will feel better."
Crawford did not throw before Friday night's game, and he planned to get treatment throughout while keeping an eye on the late innings for the possibility of pinch-running duties.
Crawford said he has not had any tests on his shoulder.
"Hopefully I don't have to get to that," he said.