Clippard's back tightened up on him during batting practice and was unavailable against the Yankees, manager Terry Collins said on MLB Network during Friday's game.
However, Clippard said his back loosened during the game and deemed sitting out on Friday "precautionary," adding he is hopeful he will be able to pitch on Saturday.
"It's the first time I ever experienced anything like that," Clippard said (Sept. 18). "That's kind of why I didn't want to push it. It was kind of an unknown thing for me. I've never really had to deal with that before. But it feels good now, and we'll see tomorrow morning how it feels. But I feel optimistic about it. It'll probably just be a one-day thing and good to go tomorrow."
After Steven Matz left the game with 102 pitches, the Mets used Hansel Robles in the seventh inning, Addison Reed in the eighth inning and Jeurys Familia in the ninth inning.
"I feel like if I had to throw, I probably could have," Clippard said. "It's more a precautionary thing. I don't want to push it. It's kind of the luxury of what we've got going on here that I'm able to do that. The guys picked me up tonight."