Tyson Fury remained undefeated, defending his WBC heavyweight belt Saturday with a devastating knockout of top contender Dillian Whyte at Wembley Stadium.

Fury, 33, improved to 33-0-1 in his career with the win. After outboxing Whyte for most of the first five rounds, Fury landed a huge uppercut late in the sixth round that put Whyte on his back. While he managed to climb back to his feet, referee Mark Lyson called off the bout when Whyte staggered forward and fell into the ropes.

The question now is whether the masterful performance was Fury’s last.