Steven Luatua will replace Jerome Kaino as skipper of the Blues and has challenged his team to finish their final five games of the season undefeated.
Coach Sir John Kirwan has turned to Luatua, rather than the more experienced Keven Mealamu, after consulting the veteran hooker and Kaino, who is out with a finger injury.
Luatua said he was shocked to receive the phone call from Kirwan, but is looking forward to his new role as leader starting with the match against the Rebels in Melbourne on Friday. Luatua captained the team in pre-season.
"I'm gutted about Jerome's injury, but being skipper of the Blues - that's something you aspire to as a kid when you're growing up in this region.
"We want to finish strongly. I've got the skipper's armband now and I want to keep a 100 per cent record."