The Marlins closer is receiving treatment, and on Thursday he once again didn't do any throwing.
"I slept wrong or something when I popped out of bed," Cishek said. "It happens. Nothing serious."
Cishek was a standout closer last year, saving 34 of 36 chances to go with a 2.33 ERA.
Considering all the throwing he had been doing entering Spring Training, Cishek doesn't feel missing one stint on the mound is a big deal.
"I've been throwing off the mound in the offseason," he said.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter