Looks like that JAX defender went down with a bad knee injury. The trainer was stabilizing it on the cart. If I had to guess, the way his leg moved when he was injured, it looked like an MCL, though the ACL may be involved as well.
The broadcast crew said Fitz led Miami in rushing last season. I had to look it up. It sounded outrageous. Turns out he did, and they had worse rushing stats than us!
Fitz 54carries 243yds 4.5ypc 4TDs
Their rusher with the most carries:
Kalen Ballage 74 carries 135yds 1.8ypc 3TDs