Barça on the attack. Sergio Ramos leapt to clear a ball that Antoine Griezmann had left hanging in the air. In the jump his elbow struck Luis Suárez, who was attempting to finish the play. Ramos collapsed momentarily, stunned. He did not lose consciousness, yet the assistants escorted him from the field. A few minutes later he rejoined the match. Was this nothing or something more? Valencian neurologist and research director at the Irenea Vithas Institute for Neurological Rehabilitation believes this moment reveals a common risk in elite football: small head impacts that are easy to overlook as mere play, yet carry real consequences.
