'Concussion' trivia and fun facts

Will Smith and Adewale Akinnuoye-Agbaje also star together in 'Suicide Squad'.

Adapted from the GQ article 'Game Brain', written by Jeanne Marie Laskas.

To prepare for the film, Will Smith and director and screenwriter Peter Landesman, observed several autopsies, including two conducted by Dr. Bennet Omalu.

The actor Alec Baldwin followed and studied several prominent Pittsburgh doctors while preparing for the film.

The player Matthew Willig, a sportsman of the National Football League that was part of six different teams and were active for fourteen seasons, appears in the film.

Ridley Scott was originally set to direct after his film 'Exodus: Gods and Kings'.