Wasps flanker George Smith is keen to get stuck in to the back-row battle in Saturday's Champions Cup semi-final against Saracens in Reading.
The Wallabies legend's prowess at the breakdown has played a huge role in Wasps reaching their first European semi-final since 2007.
There will be several mouth-watering match-ups in Saturday's semi-final and Smith can't wait to see the duel between the two number eights – Saracens' Bily Vunipola and Wasps team-mate Nathan Hughes.
"Billy is one player within a very good team," he told EPC Rugby.
"Everyone knows about his attributes, he's a big, strong ball carrier. He has displayed his positive attributes throughout the season and with England in the Six Nations.
"You can't be hesitant against a player like him, in defence or attack. Hesitation and doubt in your own ability against a player like Billy will not help you out there.
"Nathan is an exceptional player and people have seen that with his displays over the last couple of seasons. It's been fantastic to see how he's developed and taken to his work. Knowing him personally and how he works, I believe Nathan is a very dangerous player.
"I hope Nathan sees it as a personal challenge to take-on Vunipola, and I feel Billy would be the same. Every individual wants to out-do their opposite man and that's the same for me. You want to get one-up on your man and that's the way it is."