Oct. 25 hasn't been good for previous unbeaten Texas teams

Posted by ESPN.com's Tim Griffin

At least one Big 12 team is guaranteed to drop from the unbeaten ranks when Texas and Oklahoma State meet Saturday in Austin. The Longhorns have to be hoping for a turnaround after two previous Texas teams saw their unbeaten hopes halted on Oct. 25 in the past.

Here's a look at those earlier Texas struggles.

Oct. 25, 1958 -- Rice 34, No. 4 Texas 7 (Houston): The Owls jumped to a 34-0 lead and cruised to an easy victory, ending the unbeaten hopes of the 5-0 Longhorns. Quarterback Alvin Hartman and running back Jon Schnable dominated play, blowing the game open after turning a Texas interception and fumble into short third-quarter touchdown marches. The Longhorns failed to advance inside the Rice 24 and accounted for their only score on Clair Branch's 90-yard interception return with 39 seconds left to play. Texas finished the season 7-3 and failed to make a bowl trip.

Oct. 25, 1980 -- SMU 20, No. 2 Texas 6 (Austin, Texas): Freshman quarterback Lance McIlhenny directed a stunning upset in his first career start to ruin the Longhorns' 5-0 start. Craig James rushed for 143 yards and added a 53-yard TD run. Safety James Mobley added the clinching touchdown on a 22-yard interception return to help the Mustangs notch their first victory in 14 seasons against the Longhorns. Texas finished the season 7-5, ending with a loss in the Bluebonnet Bowl to North Carolina.

Could similar Oct. 25 struggles haunt the Longhorns today in Austin against the Cowboys? We'll see.