What happened: Cleveland leads Pittsburgh 21-10 in a game that is still in progress, and the Browns have ruled out Mason Graham with a left knee injury. Adin Huntington replaced him, and he and Maliek Collins are the only true defensive tackles the Browns have left standing.

Why it matters: One injury can test a rotation, but losing Graham this early exposes how thin Cleveland is in the middle. If the Browns are already down to Huntington and Collins inside, it is fair to question whether this front is really built to hold up against top offenses.