Cowboys tight end Jason Witten thought he was leaving the game for one play just to regain his senses.
"I felt OK," he told reporters this week.
But Dr. Robert Fowler of the Cowboys' medical staff disagreed. According to Fowler's sideline diagnosis, Witten had suffered a concussion while being tackled in the fourth quarter of last week's 27-20 loss to the Bears.
"I didn't feel like it was a concussion," said Witten, who did, however, admit to feeling "woozy there for a little bit."
Witten was furious. He argued with Fowler as cameras captured the heated exchange. But the system worked in this case because per the NFL's new guidelines on dealing with concussions, Witten wasn't allowed to return, no matter how mad he got.
Unfortunately, the system hasn't always worked this season.
One particularly troubling situation happened at Philadelphia in Week 1. Eagles linebacker Stewart Bradley and quarterback Kevin Kolb both were allowed to return briefly after suffering concussions. Further tests revealed the concussions, and they sat out the second half and the following week in Detroit.
Obviously, mistakes can and will be made while trying to diagnose concussions. But in Bradley's case, he was so woozy he staggered sideways, fell and had to be helped off the field by medical trainers. Yet Bradley was allowed back on the field in less than the five minutes it takes to administer the typical sideline concussion test.