Allen had a No. 1 national ranking and a 30-game winning streak heading into its December state semifinal against Duncanville. But Duncanville had quarterback Ja'Quinden Jackson. Jackson ran for three touchdowns, including a 92-yard scamper in the second quarter, and 174 yards. Jackson also passed for a touchdown. Duncanville didn't win the state championship — they lost the Class 6A Division I state final on a Hail Mary pass — but they put a big dent in Texas' biggest high school sports dynasty.