In "Concussion", Smith played Dr. Bennet Omalu of the Brain Injury Research Institute, the first to discover chronic traumatic encephalopathy. Smith reported he had doubts about the film early in the production, saying, "some of my happiest memories are of watching my son catch and throw a football. I didn't want to be the guy who did a movie saying football could be dangerous." These views subsided when he met Omalu, whose words about American ideals resonated with Smith. Smith's performance was praised for being "sensitive understated".