Manager Terry Collins said Clippard is doubtful to pitch after his back was still tight Saturday morning.
"He's got to get some treatment and then go throw, but he's pretty stiff this morning," Collins said.
Clippard did not undergo an MRI on Friday after he tightened his back during batting practice (Sept. 18). After the game, he said his back loosened and would see how he felt in the morning.
“I feel like if I had to throw, I probably could have,” Clippard said on Friday. “It’s more a precautionary thing. I don’t want to push it."