The Hurricanes beat the Waratahs for the first time since 2006 when they secured a 12-33 bonus point Super Rugby victory in Sydney on Saturday.
The Hurricanes started the match having lost their last four matches against the Waratahs and keeps them in contention for the play offs as they moved above the Highlanders in the New Zealand conference.
The result also ends the Waratahs hopes of reaching the play offs and extends their losing streak to six consecutive matches.
The Hurricanes outscored the Waratahs by four tries to none as the hosts could only muster four Berrick Barnes penalties.
The Hurricanes surged home with three tries in the final 17 minutes to claim an extra point and stay six points adrift of the second-placed Crusaders in the New Zealand Conference with two matches left for the Wellington team.
It was the Hurricanes' fourth win in their last five games and came on the back of their 66-24 battering of the Melbourne Rebels at home the previous weekend.
The Hurricanes played without much of the ball for most of the second half while the Waratahs, well down on confidence, could not come up with a try and all their points came from four Berrick Barnes penalties.
It was a gloomy night for the Sydney team, their sixth straight loss and their 10th of the season - their worst return in a Super Rugby season - as they count down the games to the end of a dreadful campaign.
But the Hurricanes, who are the highest scorers in the southern hemisphere provincial championship with 438 points at an average of 31 points a game, march on with two crucial New Zealand derbies ahead against the Crusaders and the Chiefs to decide their playoff fate.
The Hurricanes tries came from Julian Savea, Motu Matu'u, Conrad Smith and Chris Eaton with fly-half Beauden Barrett kicking two conversions and three penalties.
"We managed to cross the line a few times this season and it's keeping us in the hunt," Hurricanes' All Black centre Smith said.
"It was tough wet conditions tonight and we adjusted to the conditions really well in the second half."
The Waratahs' dismal performance heaped further pressure on first-season coach Michael Foley, with the under-achieving side fielding eight Wallabies in their starting lineup.
"We are very disappointed with the way we played tonight," Waratahs' skipper Benn Robinson said.
"To be leaking 33 points is very disappointing. In years gone past we've been a strong defensive side, but 33 points, no matter how good our attack is, we can't be winning those games."
The Waratahs will finish the season with matches against Australian rivals, the Brumbies and the Reds, after this month's international season window.
Final Score Waratahs 12 (9) Hurricanes 33 (13).
Pen - B. Barnes 4
Tries - J. Savea, M. Matu'u, C. Smith, J. Eaton
Pen - B. Barrett 3
Con - B. Barrett 3
Referee: Bryce Lawrence
Assistant Ref 1: Julian Pritchard
Assistant Ref 2: Ed Martin
TMO: Matt Goddard
15. Bernard Foley, 14. Tom Kingston, 13. Rob Horne, 12. Adam Ashley-Cooper, 11. Drew Mitchell, 10. Berrick Barnes, 9. Sarel Pretorius, 8. Wycliff Palu, 7. Jono Jenkins, 6. Dave Dennis, 5. Kane Douglas, 4. Sitaleki Timani, 3. Sekope Kepu, 2. Tatafu Polota-Nau, 1. Benn Robinson (c).
Replacements: 16. John Ulugia, 17. Jeremy Tilse, 18. Richard Stanford, 19. Lopeti Timani, 20. Brendan McKibbin, 21. Daniel Halangahu, 22. Tom Carter.
1. Ben May, 2. Dane Coles, 3. Jeffery Toomaga-Allen, 4. Jeremy Thrush, 5. Jason Eaton, 6. Faifili Levave, 7. Jack Lam, 8. Victor Vito, 9. TJ Perenara, 10. Beauden Barrett, 11. Julian Savea, 12. Tim Bateman, 13. Conrad Smith (c), 14. Alapati Leiua, 15. Andre Taylor.
Replacements: 16. Motu Matu'u, 17. Reg Goodes, 18. James Broadhurst, 19. Brad Shields, 20. Chris Eaton, 21. Tusi Pisi, 22. Jayden Hayward.