His rating was more indicative of an average signal caller at 73.9 .
Rex Grossman had his best season as a professional quarterback , throwing for over 3,200 yards and 23 touchdowns .
Rex Grossman 's rating was more indicative of an average signal caller at 73.9 .
Rex Grossman had his best season as a professional quarterback , throwing for over 3,200 yards and 23 touchdowns .