just for comparison (from UTsports):
Manning- 89/144 61.8% 1141yds 11td 6int in 10 games
Clausen- 121/194 62.4% 1473 yds 15td 6int in 9 games
Ainge- 109/198 55.1% 1452yds 17td 9int in 9 games
Bray- 98/179 54.7% 1537yds 14td 7int in 8 games
I may go with Casey since they put up some insane points on offense that year
Ainge beat Florida, Georgia, and Alabama. How did those other guys fair against these three teams in their freshmen seasons? Also, he set the record for touchdown passes as a freshmen. Ainge was the best as a freshmen, hands down imo
Bama
Manning lost (his only loss as a starter that year)
Clausen won
neither started versus Florida
Neither started versus Georgia