'Concussion' trivia and fun facts

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.

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

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

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

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