Oklahoma State's top two running backs were out with injuries. Dezmon Jackson played, and that was enough for the Cowboys.Jackson rushed for career highs of 235 yards and three touchdowns, and No. 21 Oklahoma State beat Texas Tech 50-44 on Saturday.Jackson had 36 carries, in part, because Chuba Hubbard and LD Brown did not play. The junior said he couldn't remember getting that many carries in any level of football.