 But that didn't stop Ben Wallace from being one of the best defenders in NBA history. Again, four Defensive Player of the Year awards. He's tied with Dikembe Mutombo for the most all-time. And he came into the league during an era where Big Ben actually ruled the NBA. But he was undrafted. And he was considered undersized. And he was overlooked. But he made up for it with intensity, physicality, tremendous attitude.