"I believe in him a lot, as a person and as a player, like I do in all my players. I don't think that's fair to anyone if I don't pick a player ... because of where we are playing. I don't think that would be right by me. It would be weakness by me as well, if I was scared of that."
Picking Cooper was part of a pre-arranged schedule and the Wallabies 27-19 victory in Sydney and chance to claim the Bledisloe Cup tomorrow, would not alter that plan.
"Just because we won in Sydney I didn't want to change my approach," Cheika said.
"I just wanted to have a look at the combination of him (Cooper) and (Matt) Toomua together. They did play together a bit on the Spring Tour together and I like what they did together."
Cheika said Cooper was talented and improving on and off the field. He was a strong trainer and he wanted to back that as he made the Wallabies a moving target as he kept the All Blacks guessing..
Tomorrow's test at Eden Park is the Wallabies' chance to win the Bledisloe Cup for the first time in 12 years and end a 29-year Auckland hoodoo.
Cheika acknowledged a strong forward platform was the key for any five eighths to operate.