RALEIGH, N.C. (AP) North Carolina State doesn't know exactly what kind of defense it has entering Saturday night's visit from Ball State.

The Wolfpack didn't allow a touchdown in the first two games against overmatched East Carolina and Western Carolina teams. But the defense followed with a shaky showing against a West Virginia team that had shown little offensive potential to that point, and now that unit faces one of the nation's top passers in Ball State quarterback Drew Plitt.

North Carolina State (2-1) had allowed six points entering last weekend's trip to West Virginia, which had managed a combined 27 points in its first two games while failing to reach 300 yards in either. Yet the Mountaineers posted 44 points and 445 yards in the win, including two touchdowns of at least 20 yards in the opening quarter.