IRVING, TX – OCTOBER 5: Darren Woodson #28 and Roy Williams #31 of the Dallas Cowboys tackle tight end Freddie Jones #85 of the Arizona Cardinals on the incomplete pass at Texas Stadium on October 5, 2003 in Irving, Texas. The Cowboys defeated the Cardinals 24-7. (Photo by Ronald Martinez/Getty Images)Oklahoma took down Texas in yesterday’s Red River Showdown using an unfamiliar weapon: a hard-hitting defense.The inability to stifle opposing offenses has been an issue for OU for some time, but this year’s unit looks much improved. On Saturday, the Sooners sacked Texas quarterback Sam Ehlinger nine times.Former Oklahoma safety Roy Williams took notice. No stranger to big hits and heroics against Texas, Williams was asked by a Twitter follower if yesterday’s defensive effort made him happy.“Sure did,” he wrote back. Sure did! 💪🏾💪🏾 https://t.co/UNhRHUPnf2— roy williams (@roywilliams31) October 13, 2019We all know OU’s offense is explosive, and as long as Lincoln Riley is coaching and Jalen Hurts and CeeDee Lamb are healthy, it should remain that way.But if this Sooner defense is for real, it could mean the difference between Oklahoma being the Big 12 favorite and reaching the College Football Playoff and actually having a shot at winning the whole thing.Stay tuned.