The Crusaders bounced back from their loss to the Chiefs with a 25-8 win against the Blues in Auckland on Friday.
The Super Rugby champions extended their winning streak over the Blues to 11 matches, while the Blues have now lost 26 of their last 29 New Zealand derbies.
The hosts weren't able to capitalise on a great start, which saw Patrick Tuipulotu score a try.
David Havili got the Crusaders on the board with a penalty goal, before George Bridge scored in the left-hand corner after collecting a brilliant offload from Jack Goodhue.
Havili missed the conversion but kicked another penalty to give the visitors an 11-5 half-time lead.
Matt Duffie added three points to the Blues' tally early in the second half only for the Crusaders to hit back with a try from Richie Mo'unga.
Goodhue crossed for their third try in the 58th minute, but the visitors were unable to get a fourth that would have earned them a bonus point.
Try: Patrick Tuipulotu. Penalty: Harry Plummer.
Tries: George Bridge, Richie Mo'unga, Jack Goodhue. Conversions: David Havili (2). Penalties: Havili (2).
Match and player stats
15 Matt Duffie, 14 Jordan Hyland, 13 Joe Marchant, 12 TJ Faiane, 11 Mark Telea, 10 Stephen Perofeta, 9 Jonathan Ruru, 8 Hoskins Sotutu, 7 Blake Gibson, 6 Dalton Papali'i, 5 Josh Goodhue, 4 Patrick Tuipulotu (c), 3 Ofa Tuungafasi, 2 James Parsons, 1 Karl Tu'inukuafe.
Subs: 16 Kurt Eklund, 17 Ezekiel Lindenmuth, 18 Sione Mafileo, 19 Tom Robinson, 20 Tony Lamborn, 21 Sam Nock, 22 Harry Plummer, 23 Emoni Narawa.
15 David Havili, 14 Sevu Reece, 13 Braydon Ennr, 12 Jack Goodhue, 11 George Bridge, 10 Richie Mo'unga, 9 Bryn Hall, 8 Tom Sanders, 7 Tom Christie, 6 Cullen Grace, 5 Mitchell Dunshea, 4 Scott Barrett (c), 3 Oliver Jager, 2 Codie Taylor, 1 Joe Moody.
Subs: 16 Andrew Makalio, 17 George Bower, 18 Michael Alaalatoa, 19 Luke Romano, 20 Sione Havili, 21 Mitchell Drummond, 22 Brett Cameron, 23 Will Jordan.