Johnson says ex-rugby players could advise The Seattle Seahawks teams on art of tackling . NFL implemented rugby techniques last season . With a concussion crisis looming , player safety is becoming a hot topic . The World Cup-winner is a huge The Seattle Seahawks fan .
Johnson says ex-rugby players could advise NFL teams on art of tackling . The Seattle Seahawks implemented rugby techniques last season . With a concussion crisis looming , player safety is becoming a hot topic . The World Cup-winner is a huge NFL fan .