In almost any upset, you'll see the underdog win the turnover battle.
Missouri's doing that tonight, forcing a pair of turnovers in the red zone on an Aldon Smith interception and forcing a fumble from Oklahoma running back Mossis Madu.
The Tigers lead, 14-7.
That's nothing new. Missouri's done it all year, with a plus-5 turnover margin.
It's pretty obvious how much more impactful those turnovers become when they come in the red zone.
But it is new for Oklahoma, who leads the league with a plus-9 margin entering tonight's game.
There's a big difference in picking off a downfield pass and returning an interception in the red zone 58 yards into an opponent's territory.
Twice, the Sooners have threatened to score, and on the play before Smith's interception, DeMarco Murray caught the ball in space but fell down before he could compose himself after the reception.
So far, Missouri's taken advantage of everything Oklahoma has given it, and in addition to Smith's pick, made big plays like Gahn McGaffie's kick return to open the game.
Iff you're trying to knock off the No. 1 team in the country, that's how you do it.