None this year where he was the only one at fault. Nighty did save him once vs Bunnies,the same tackle friz missed as well.His D has improved heaps this year.Name a player that has never missed a tackle.And how many tries has Dufty let in? If Nighty wasn't covering his back it may look a bit worse. Dufty is a good attack player and Duges was a good defence player. Stop comparing apples with oranges.