The Brumbies ran in four second-half tries to record a convincing 41-23 victory over the Chiefs in Canberra on Friday.
Having led 13-6 at the break in a first half dominated by Steve Walsh's whistle, the Brumbies ran riot in the second 40.
It was the Chiefs, though, who struck first in the second half through a Gareth Anscombe penalty before the Brumbies responded with a five-pointer from Joe Tomane.
Tomane was then cynically tripped by James Lowe, who received a yellow card for his sins. The Brumbies capitalised on their man advantage, scoring 15 unanswered points while Lowe watched on from the bin.
Two late tries from the Chiefs added some respectability to the scoreline, before Matt Toomua dotted down after the hooter wrap to up an impressive victory that keeps up the pressure on the Sharks in the overall standings.
Brumbies – Tries: Matt Toomua (2), Joe Tomane, Tevita Kuridrani (2). Conversions: Christian Leali'ifano, Nic White. Penalties: Leali'ifano (2), White (2).
Chiefs – Tries: Brad Weber, Josh Hohneck. Conversions: Andrew Horrell (2). Penalties: Gareth Anscombe (3).
Brumbies – 15 Jesse Mogg, 14 Joe Tomane, 13 Tevita Kuridrani, 12 Christian Leali'ifano, 11 Robbie Coleman, 10 Matt Toomua, 9 Nic White, 8 Ben Mowen (c), 7 Jarrad Butler, 6 Jordan Smiler, 5 Sam Carter, 4 Scott Fardy, 3 Ben Alexander, 2 Stephen Moore, 1 Scott Sio.
Subs: 16 Siliva Siliva, 17 Ruan Smith, 18 JP Smith, 19 Jack Whetton, 20 Tom McVerry, 21 Michael Dowsett, 22 Andrew Smith, 23 Pat McCabe.
Chiefs – 15 Tom Marshall, 14 Tim Nanai-Williams, 13 Andrew Horrell, 12 Bundee Aki, 11 Asaeli Tikoirotuma, 10 Gareth Anscombe, 9 Augustine Pulu, 8 Liam Messam (c), 7 Sam Cane, 6 Nick Crosswell, 5 Brodie Retallick, 4 Ross Filipo, 3 Ben Tameifuna, 2 Mahonri Schwalger, 1 Pauliasi Manu
Subs: 16 Nathan Harris, 17 Jamie Mackintosh, 18 Josh Hohneck, 19 Matt Symons, 20 Tevita Koloamatangi, 21 Brad Weber, 22 Dwayne Sweeney, 23 James Lowe.
Photo: Mark Nolan/Getty Images