Mark Ballas may not be hitting the dance floor tonight.
ABC confirms with ET that the Dancing With the Stars pro was injured, but it is still not known if he'll be able compete this week with his partner, UFC fighter Paige VanZant.
Ballas, 29, appeared fine over the weekend as both he and VanZant Instagrammed a selfie from rehearsal. "Yeah, we're cute #DWTS #dwts22 #POWRIGHTINTHEKISSER," she captioned the pic.
VanZant also turned 22 on Saturday, and Ballas announced on Instagram that they were "throwin' her a big birthday bash."
Ballas and VanZant had a great first dance on the season 22 premiere of DWTS last week. The UFC fighter pulled off an impressively graceful and impassioned foxtrot with her pro partner, and earned a 21 score from the judges.
This wouldn't be the first time Ballas has sustained an injury while competing on DWTS. In May 2014, he seriously hurt his shoulder during a rehearsal with his celebrity partner, Fuller House star Candace Cameron Bure. ABC confirmed at the time that he was injured while rehearsing camera blocking, and a routine that involved him lifting the actress onto his shoulders. He still ended up performing on the show's finale.
ET will update you as this story continues to develop.