TCU's Trevone Boykin was the best quarterback on the field and OU ran into problems running the football as avenue after avenue seemed filled by a Horned Frog. Here's a look at five stats that defined the upset loss for the Sooners, with the help of ESPN Stats & Information:
OU's 2.12 yards per carry on first down: TCU simply refused to let the Sooners run the football on first down. Gary Patterson's team was focused on stopping the run throughout the game but winning on first-down rushes was key as OU had 17 first-down carries for 36 yards and one touchdown. Samaje Perine -- the true freshman running back who many had anointed as OU's next great running back after a stellar game against West Virginia -- was held to 14 first-down carries for 46 yards (3.29 ypc).
Trevor Knight's 16.7 completion percentage on third down: To say Knight struggled on third down is to put it mildly. The sophomore was 1-of-6 for 12 yards on third-down plays including the game-changing interception by TCU linebacker Paul Dawson. He finished with a raw QBR of 5 on third down. The Sooners converted 7 of 18 third-down attempts into a new set of downs.
TCU's 87.5 third down conversion percentage in the first quarter: It was critical for the Horned Frogs to start well against OU's defense and they did, converting six of seven third-down attempts during the first 15 minutes. Boykin was 4 of 5 for 47 yards on third down as he got off to a terrific start on the way to the upset victory.
OU's 3.04 yards per play in the fourth quarter: With 14:12 left in the game, the Sooners trailed 37-33. OU's offense scored four touchdowns in the game but when the Sooners needed it the most, the offense didn't get it done. Knight and company managed just 3.04 yards per play in the final quarter, running 28 plays for 85 yards. The Sooners averaged 13.7 yards on six fourth-quarter drives.
Sterling Shepard's seven receptions: The junior had a career-high performance with 215 receiving yards on his seven catches. It's an interesting number because the rest of the team combined for seven receptions for 94 yards. Shepard is a star but as teams take him away in the future, OU will need someone to step up or Knight could be in for more days like Saturday.