"That's up to our docs and trainers to monitor that," Pagano said.
The severity of Luck's condition has yet to be determined, but it's extremely rare for a player to bounce back from a concussion during a short week. It's worth noting that Packers receiver Davante Adams entered concussion protocol after a Sunday game in Week 6 only to suit up for Green Bay's Week 7 appearance on Thursday Night Football. Head injuries, though, are a player-to-player proposition.
Zak Keefer of The Indianapolis Star pinpointed one potential source of Luck's injury: