Has the USL found the way forward in soccer's concussion problem?

Jan Vertonghen's injury was the latest flash point to call attention to football's treatment of head injuries.


The issue of head injuries in soccer -- and how to diagnose them -- has received more attention in recent weeks. The handling of an incident involving Tottenham Hotspur defender Jan Vertonghen, who returned to the field in the first leg of the Champions League semifinal against Ajax after suffering a head injury, was criticized in some quarters after the player nearly collapsed shortly after being cleared for play.


Now, for the first time, a league is prepared to take the on-field diagnosis...