Injuries have an impact on every NFL season, but ailments don't limit themselves to September through February. There are already hurting players who have fans on edge.
You can tell yourself that everything will be fine because kickoff isn't for a few months. But losing a star player in June can hurt just as badly as in October.
Granted, not every player on this list is out for the season. On the contrary, many, if not all, will be back on the field at some point this year.
Yet that doesn't mean there aren't concerns about the recovery timetable, or whether each player's production will be able to match the pre-injury output.
So click through to find out which five players are causing an anxious flop sweat that isn’t due to the summer heat.