Indeed during Davies' absence during the Six Nations and then through a subsequent suspension, Cook was able to play in five straight RaboDirect PRO12 matches and lasted the full 80 minutes against the Dragons, Scarlets and Warriors.
Suddenly the 20-year-old's dream of following Blues academy teammates Alex Cuthbert and Harry Robinson into the senior Welsh set-up no longer seems so farfetched and here we find out what Cook's recipe is for success on and off the field is.
The most famous person I have met is probably Gavin Henson, during his time at the Blues. Outside of rugby it would be Max Boyce, he's a singer and he did a bit of stand-up comedy and a Rhondda School dinner last year.
In terms of my rugby heroes I'd have to say Bradley Davies wouldn't I? I'm rather forced into it but he has a great physical presence and is a big ball carrier. He's someone I have learnt a lot of and hope to follow in his footsteps.
My best roommate has been Rheon James, who is with the Scarlets. I stayed with him in the Junior World Championships and he was good as gold. He's a big boy though, we used to call him the bull because he's massive.
The best away venue I have played at is probably the RDS Arena, where I came off the bench. The atmosphere was phenomenal when we visited in November in the RaboDirect PRO12.
The best thing about being a second row is the fact you are always involved in the game, whether that be in the scrum, lineout or just tackling. It is just action all the way - no standing around for things to happen.
I hope my coaches aren't reading this but my guilty diet pleasure is chocolate digestives. When I come home I'm partial to a few of them.
My ultimate idea of rugby happiness is representing my country. Anyone growing up in Wales would say the same I think. It's the biggest sport in the country and I was lucky enough to captain Wales at Under-20 level which was a huge honour.
I actually started off on the wing and as I started getting bigger and bigger I made my way towards the forwards. I first picked up a rugby ball when I was about five-years-old and just really enjoyed playing and ended up Treorchy rugby club in the older age groups.
Lose Yourself by Eminem would be my personal theme tune if I could pick any. I listen to it on my iPod before every game and it gets me fired up every time.
The thing I love most about rugby is getting your hands on the ball in your hands and running. It's just a great sport to watch and be involved in, and I am thankful for the opportunity I have to be involved in it on a daily basis.
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