The NFL launched an investigation on Friday into how league concussion protocol was applied to New York Giants quarterback Jaxson Dart in the club's Thursday home victory over Philadelphia.

The probe, conducted jointly with the NFL Players Association under rules of their collective bargaining agreement, involves Giants coach Brian Daboll and rookie running back Cam Skattebo entering the medical tent on the sidelines while Dart was being examined.

Dart, in only his third NFL start, completed 17-of-25 passes for 195 yards and a touchdown and ran for 58 yards as the Giants upset the defending Super Bowl champions and improved to 2-4.

Dart, 22, departed from the contest late in the third quarter after being sacked by the Eagles' Patrick Johnson and grabbing his head while down on the turf.

See Full Page