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Brandon Chatmon, ESPN Staff Writer Close - Covers the Big 12
 - Joined ESPN.com in 2011
 - Attended the University of Colorado
 
An opportunistic defense sparked Oklahoma State to a 69-14 win over Texas-San Antonio at Boone Pickens Stadium on Saturday.
Here’s how it happened:
How the game was won: UTSA’s first drive was a preview of the defining element of the contest.