Football star Aaron Donald quits: He was the best NFL defender of his time. Donald, 32, the biggest terror of all playmakers has said goodbye to professional football.
At 1.85 meters, Donald is relatively small for his position. This means it has a low center of gravity and was easy to grab. Added to this were exceptional speed, agility and strength. Donald was unique at the defensive tackle position. For some experts, he was even the best defender in NFL history, regardless of the exact position.