Judging Clausen by his QB rating last night is disingenuous
Dexter Jackson doesn't slip: QB rating jumps to 69
Sutton doesn't fumble on the 1 yard line: QB rating jumps to 91
There are things to pick on (like his butt-ugly delivery and wobbly passes) but for a rookie playing his first game ever, nationally televised, with no protection in the rain in someone else's stadium? Like him or hate him, it was impressive.
Passer rating only includes errors by the QB, not errors of any other players. Over a season, the QB rating is much more accurate than in one or two quarters of a preseason game.