HARD IMPACT Wes Welker No.83 of the Denver Broncos attempts to make a catch as Darius Butler No.20 of the Indianapolis Colts defends during a 2015 AFC Divisional Playoff game at Sports Authority Field at Mile High on January 11, 2015 in Denver, Colorado. AFP PHOTO
WASHINGTON: The National Football League (NFL)’s top health executive on Monday (Tuesday in Manila) became the first senior league official to acknowledge a link between football-related head trauma and the brain disease chronic traumatic encephalopathy.