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.