After several scrambling runs, he hit Reggie Barlow with a 4-yard touchdown strike to start the fourth quarter.
But in the fourth quarter, he completed 4 of 5 passes for 62 yards including the game-winning 20-yard touchdown strike to Charles Johnson.
In the third quarter, the duo of Manning and Harrison struck again with a four-yard touchdown strike.
Hasselbeck completed six consecutive passes on the next drive, the last a 17-yard touchdown strike to Williams.
Brady then ended the game with a spectacular 82-yard touchdown strike to Troy Brown and a 19-13 final.
Quarterback Doug Williams fired touchdown strikes of 80, 27, 50 and 8 yards within 13 minutes.
The Cyclones could not answer the touchdown strike.
Casey's touchdown strike was the 31st of his career, which broke Mike Gluck's 1991 school record.
The Bulldogs answered less than two minutes later with a 32-yard touchdown strike.
The 57-yard touchdown strike and 2-point conversion gave Princeton a 34-31 lead.
