Ezra Shaw/Getty Images
Vernon Davis, tight end for the San Francisco 49ers.
Add San Francisco 49ers tight end Vernon Davis to the long list of players who have suffered a concussion during the 2012 NFL season.
According to ESPN.com, Davis left the 49ers' Sunday Night Football dismantling after a brutal hit by Seattle Seahawks safety Kam Chancellor.
Davis suffered a concussion on the play. He must now miss at least five days of competitive action as he progresses through the NFL-mandated concussion testing protocol. That protocol is as follows:
- Symptoms resolve and remain resolved for 24 consecutive hours
- Symptoms do not return with light activity
- Symptoms do not return with sport-specific activity
- Symptoms do not return with non-contact practice
- Symptoms do not return with full-contact practice
Each step is 24 hours long. If Davis' symptoms return during any step, he must rest for 24 hours and then resume the process at one level below where he was when his symptoms returned. He also needs to be medically cleared by an independent neurologist.
According to my calculations based on ESPN's and PBS' Concussion Watch, players return from a concussion in time for their team's next game just over 50 percent of the time.
After being annihilated by the Seahawks in Week 16, 49ers quarterback Colin Kaepernick is certainly hoping Davis falls in that group.
To make matters worse, Mike Garafolo of USA Today reported on Monday that 49ers wide receiver Mario Manningham suffered a torn ACL and PCL on Sunday.
Hopefully, Manningham can recover from such a brutal, devastating injury, and the entire league is surely sending him their well wishes.