FORT WORTH, Texas — Carl Edwards got the victory he desperately needed to earn a championship-contending spot in the NASCAR Sprint Cup finale, winning at Texas on Sunday night in a race shortened by 41 laps because of rain after the start was delayed nearly six hours. With his fourth career win at Texas, Edwards joined Jimmie Johnson as drivers locked into the championship-contending spots in Homestead. That leaves two spots up for grabs next Sunday at Phoenix.