Burfict was originally diagnosed with a stinger during the victory over the Atlanta Falcons. It wasn't until after the game that he began to exhibit symptoms of another concussion. He will have to go through the NFL's concussion protocol before he's allowed back on the field again.
With a pair of concussions over a seven-day span, Burfict could be facing a multi-week absence.
The NFL's leading tackler in 2013 was playing even better through two weeks, blowing up the ground game, harassing quarterbacks and hanging tough with running backs and tight ends in coverage. It's hard to find a linebacker playing at a higher level.