A hard-fought 19-12 win over the Brumbies in Sydney on Saturday kept the Waratahs firmly in the race for the Super 14 semi-finals.
A second-half try from Lachie Turner proved to be the difference between the sides in a game high on intensity but low on excitement.
The result means the Waratahs will finish the weekend in fifth place in the standings, just one point short of fourth spot.
As is so often the case in Aussie derbies these days, defence was the name of the game. With neither team willing to commit numbers to the breakdown or spread the ball, the kicking tee was the only solution for points...
The Waratahs had a 9-0 lead after 25 minutes thanks to three penalties from the boot of Daniel Halangahu. Referee Steve Walsh wasn't happy with Brumbies rucking, having a number of heart-to-heart conversations with skipper Stephen Hoiles and asking for 'a narrower gate' from the players coming in.
The Brumbies came closest to scoring in the first half but Walsh reckoned Adam Ashley-Cooper had made a double movement when he crossed the whitewash just before the half-hour mark.
The visitors managed to level the scores before half time though with Matt Giteau slotting his third penalty just before the hooter, sending the teams to the sheds at 9-all.
Giteau missed his second penalty shortly after the break but Halangahu had no such troubles, maintaining his perfect record from the tee to put the 'Tahs back in front.
The home side were given a decent lead when Berrick Barnes' cross-field kick found Turner out wide and the winger's pace was enough to see him over the line for the game's first-and-only try.
The game started to open up a touch in the last half-an-hour and when Giteau reduced the gap to just seven points, anything was possible in the final quarter.
But with the Waratahs content to defend their lead, the Brumbies were given very little ball to attack with.
A loosing bonus-point for the Brumbies means that they are still in with a chance of making the play-offs, but it seems unlikely.
Man of the match: In tight games like these, you need to convert your kicks so we'll go for Daniel Halangahu for his five-from-five effort from the tee.
For the Waratahs:
Pens: Halangahu 4
For the Brumbies:
Pens: Giteau 4
Waratahs: 15 Kurtley Beale, 14 Lachie Turner , 13 Tom Cater, 12 Berrick Barnes, 11 Drew Mitchell, 10 Daniel Halangahu, 9 Josh Holmes, 8 Ben Mowen, 7 Phil Waugh (c), 6 Dave Dennis, 5 Kane Douglas, 4 Dean Mumm, 3 Al Baxter, 2 Tatafu Polota-Nau, 1 Sekope Kepu.
Replacements: 16 Damien Fitzpatrick, 17 Dan Palmer, 18 Will Caldwell, 19 Chris Alcock, 20 Luke Burgess, 21 Rory Sidey, 22 Sosene Anesi.
Brumbies: 15 Julian Huxley, 14 Pat McCabe, 13 Andrew Smith, 12 Tyrone Smith, 11 Adam Ashley-Cooper, 10 Matt Giteau, 9 Josh Valentine, 8 Stephen Hoiles (c), 7 Colby Faingaa, 6 Rocky Elsom, 5 Mark Chisholm, 4 Mitchell Chapman, 3 Salesi Ma'afu, 2 Stephen Moore, 1 Ben Alexander.
Replacements: 16 Huia Edmonds, 17 Guy Shepherdson, 18 Ben Hand, 19 Michael Hooper, 20 Patrick Phibbs, 21 Brackin Karauria-Henry, 22 Alfie Mafi.
Venue: ANZ Stadium, Sydney
Referee: Steve Walsh