How the NFL concussion protocol works: What Patrick Mahomes has to do to get back on the field
Briefly

Kevin SeifertESPN Staff Writer Close ESPN.com national NFL writer ESPN.com NFC North reporter, 2008-2013 Covered Vikings for Minneapolis Star Tribune, 1999-2008
Kevin SeifertESPN Staff Writer
Read at ESPN.com
[
add
]
[
|
|
]