Dancing With the Stars has only been back for a week, but a pro is already down for the count.

Franchise vet Mark Ballas may not perform during tonight’s broadcast, due to a back injury.

According to People.com, the incident occurred during camera blocking on Sunday, and Ballas’ ability to dance live will be determined by a doctor before the 8 pm broadcast. In the meantime, Ballas’ partner, UFC fighter Paige VanZant, is rehearsing with DWTS troupe member Alan Bersten.

Ready for more of today’s newsy nuggets? Well…

* MasterChef‘s seventh season will premiere Wednesday, June 1, at 8/7c, Fox announced Monday.

* Daytime Emmy nominee Sean Blakemore will reprise his General Hospital role (as Shawn Butler) for one episode in early April, Soap Opera Digest reports.

* ABC will premiere the first episode of O.J.: Made in America, ESPN’s 7-1/2 hour docuseries, on Saturday, June 11. ESPN will then begin airing the series, starting with the first two hours, on June 14.

* Texas Sen. Ted Cruz will make his first appearance on Jimmy Kimmel Live! on Wednesday, March 30.