You're reaching. I'll give you '07 and that's being generous. There aren't any more "Oh Wait's" after that. In 2003 he shriveled up in the playoffs and was benched in favor of Speedy Claxton. In '05, his boneheaded play almost cost us Game 7. In the '07 finals he matched up against a gimpy Hughes and did a great job of exploiting that stiff. With the exception of a few playoff games, he's pretty much fallen short of expectations.
The Spurs can't rely on that dude to show up in big games. I hope he proves me wrong tonight or isn't in a position to do so. The Spurs are the better team and should be handling the Mavs easily.