whats your defintion of "blew it" in a basketball game though? i can remeber more than a few where we lost by 6 points or less and sam took more than 3 terrable shots (i.e leading to fast breaks/ blocks).
you could argue him giving away possesions in those games was crucial.
I prefer to look at it another way, name me games where sam had a significant impact on the victory. i can think of 3.
SA, the second Cavs playoff game, and dallas.
i can think of a whole lot more than those 3 where i thought he was stageringly ineffective off the bench.
Plus, he doesn't play defense, team or otherwise, not from lack of effort, but due to physical limitations. Those will only be incresed this year.