Adam Reynold is the best kicker ever by percentage converted over his career so far I believe, kicking around 85% (this was his percentage after 3 full years in the NRL, I actually don't know his current conversion rate)

Yet, in a pressure situation I would still take Sinfield over anyone, the only last minute kick I can recall him missing was at the first magic weekend, which we all know was organiseed with tansy and intended to hit the crossbar so we could win and not draw the game