"They are great ball carriers so we need to make sure that we tackle well and that our defence systems work."
Bay of Plenty hooker Nathan Harris remembers how tough every Chiefs v Blues game has been, including round three this year at Eden Park when the Chiefs just got home 27-21.
"To be honest we see the Blues as being a very strong side. We have already played them this year and we had a close win. New Zealand derby wins are hard to come by with big physical battles. It doesn't really matter who we play. We don't underestimate our opposition at all," Harris said.
He is more than happy with the start to the season for the Chiefs.
"Definitely up there you know. We have had some short turnarounds and put in some good performances. We are still itching to get the perfect performance but we are definitely trying to build towards something."
Harris loves playing against the New Zealand conference teams with the intensity in the derbies showing what these games mean to the players.
"It is good to play guys of pretty similar calibre and everyone puts a lot of heart and soul into those games. So yeah it is very challenging. Defensively we just have to make sure we get our structures right and bringing a big physical presence is also key."
Coach Cooper has made three changes to the starting fifteen from the hard-fought victory over the Highlanders last weekend.
The tight five is again unchanged: Lachlan Boshier coming back into the number 6 jersey, Pita Gus Sowakula forces his way into the starting line-up after a strong debut off the bench last week and lively halfback Te Toiroa Tahuriorangi gets a start at halfback, with Jonathan Taumateine backing him up in the number 21 jersey.
The match kicks off at FMG Waikato Stadium at 7.35pm.
Chiefs team to take on the Blues
1. Aidan Ross (11), 2. Nathan Harris (36), 3. Angus Ta'avao (5), 4. Brodie Retallick (89), 5. Tyler Ardron (3), 6. Lachlan Boshier (24), 7. Sam Cane (100) (cc), 8. Pita Gus Sowakula (1), Te Toiroa Tahuriorangi (5), 10. Damian McKenzie (55), 11. Sean Wainui (5), 12. Johnny Faauli (11), 13. Anton Lienert-Brown (45), 14. Toni Pulu (24), 15. Solomon Alaimalo (14)
Reserves: 16. Liam Polwart (11), 17. Karl Tu'inukuafe (4), 18. Jeff Thwaites (2), 19. Luke Jacobson (2), 20. Liam Messam (167), 21. Jonathan Taumateine (6), 22. Charlie Ngatai (45) (cc), 23. Marty McKenzie (10)