Let me take this one, Cinco.
Ahem, from years of watching various TV medical dramas, especially the ones with self-important, young, Starbucks-sipping, beautiful medical personnel, it looks -- and having X-rays would really help -- as a car concussion is really the worst.
For two reasons. The cerebellum medulla centroplex can become unwired by tremendous force from, say, a 5,000-lb. vehicle or, if others, involved, to a human body. Also, there is the problem of gasoline and oil seeping into the ear.
In a football field concussion the player is subject to a sudden but less forceful impact to the aforementioned cerebullem antebellum medulla mandela.
Therefore the player faces less danger of reoccurrence or noggin bleeding.
If I may refer and cross-reference Ben Casey episode 37 (1961) and ER episode 15 (2001) when Dr. Giles was morose about his millions that got in the way of helping humanity in New York, those two shows show the tremendous and more perilous effect of car concussions.
I think we may safely conclude (and I believe the Medical Association and the Herbalife people would back me up on this) that the player should go into coaching or some other job that in reality really does not affect humanity.
Any medical or hydraulic or broadcasting questions come up, don't hestitate and stuff.
And let me say that we all love Abersonc but he should come in for blood work and tests to see if his cerebellum medusa Cerebrium gortex is rattled.