(WIBX950 Sports) It's been 76 races since Matt Kenseth won a NASCAR Sprint Cup Race, but that all ended on Saturday Night in Texas. Kenseth dominated Saturday's Samsung Mobile 500 at Texas Motor Speedway, leading 169 of the 334 laps.  Kenseth finished over 8 seconds in front of runner up Clint Bowyer, it was his 19th career win.   Kenseth teammates Carl Edwards and Greg Biffle finished third and fourth.   The series moves to Talladega Superspeedway this Sunday for the Aaron's 499, hear all the action on WIBX.