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Though the Longhorns' defense yielded one first down on the subsequent Southern California drive, it held the Trojans, who turned to LenDale White on a third down at midfield only to see him lose the ball and have it recovered by wide receiver Steve Smith just two yards short of a first down. A Texas timeout stopped the clock with 2:13 to play. Then, in what may have proved to be the most pivotal coaching decision of the game, Trojans coach Pete Carroll elected to give his number-two ranked offense, which had averaged 582.2 yards and 50.0 points per game on the year, an opportunity to convert a fourth down-and-two at the Texas 45-yard line. However, due to a slight offensive mis-execution by the Trojans, White managed to gain slightly more than one yard, and Southern California turned the ball over at the Longhorns' 44-yard line with 2:09 to play in the game.
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http://en.wikipedia.org/wiki/2006_Rose_Bowl