"Seattle Seahawks quarterback Tarvaris Jackson didn't finish Sunday's 36-25 win over the New York Giants with what head coach Pete Carroll later announced as a pectoral injury.

Jackson was knocked out of the game during the third quarter with what was initially announced as a right shoulder injury and replaced by Charlie Whitehurst. Carroll said Jackson's status would be determined and indicated he would undergo tests on the injury.

"We don't know what (it) means," Carroll said. "Fortunately it's bye time."

NFL Network's Jason La Canfora reported Jackson will have an MRI exam Monday, according to a league source."