The Brumbies have plenty of work to do if they are to make an impact in the Super Rugby Pacific finals with their chances of a top-two finish over after a 31-21 loss to the Chiefs.
Missed tackles and butchered opportunities deep in attack cost the Brumbies a chance to roll the competition leaders at GIO Stadium
They were competitive early before 24 unanswered points saw the Chiefs blow the game apart.
The loss leaves the Brumbies fourth on the table and likely to remain in that spot with a win against Melbourne next weekend, setting them up for a home quarter-final against the Hurricanes in a fortnight.
And they might have to do it without captain Allan Alaalatoa, the Wallabies prop helped from the field in the second half with a calf injury in what would be a monster blow.
Their defence held up well for the most part, although a clever short-side run from No.8 Luke Jacobson and an intercept try for Cortez Ratima let the Chiefs take control.
All Blacks contender Shaun Stevenson slashed through the line within five minutes after coming off the bench, their run of 24 straight points ended by Brumbies winger Corey Toole's try 10 minutes from fulltime.
No.8 Pete Samu crossed after fulltime to further reduce the margin.
The Brumbies had 65 per cent territory in the first half and were unlucky to go to the break trailing by 10 points, unable to find any points from a crucial 18-phase stand on the Chiefs' line late in the term.
The Chiefs, who have ploughed through most of the competition this season and only lost once, physically imposed themselves on the Brumbies and broke tackles easily to eat up post-contact metres.
So often able to rely on their rolling maul to get them out of trouble, the Brumbies only found one try off the back of their lineout from six inside opposition 22m, their set piece not firing against the powerful Kiwis.
In a potential battle of the respective national team fullbacks, Chiefs No.15 Damian McKenzie got the points over Tom Wright, initiating much of their attack and shifting the ball around at will.
Alaalatoa found himself in the sin bin early for a high shot on Brodie Retallick, although the Brumbies held strong and only conceded one penalty goal with the man disadvantage.
TRIES: Jacobson, Ioane, Ratima, Stevenson
CONS: McKenzie 4/4
PENS: McKenzie 1/1
TRIES: Ikitau, Toole, Samu
CONS: Lolesio 1/1, Debreczeni 2/2
ACT BRUMBIES v CHIEFS TEAMS
BRUMBIES (1-15): James Slipper, Lachlan Lonergan, Allan Alaalatoa (co-c), Nick Frost, Tom Hooper, Rob Valetini, Jahrome Brown, Pete Samu, Ryan Lonergan (co-c) Noah Lolesio, Corey Toole, Tamati Tua, Len Ikitau, Andy Muirhead, Tom Wright
RESERVES: Connal McInerney, Blake Schoupp, Sefo Kautai, Darcy Swain, Luke Reimer, Klayton Thorn, Jack Debreczeni, Ollie Sapsford
CHIEFS (1-15): Aidan Ross, Samisoni Taukei'aho, George Dyer, Brodie Retallick, Laghlan McWhannell, Pita Gus Sowakula, Sam Cane (co-c) Luke Jacobson, Brad Weber (co-c), Josh Ioane, Etene Nanai-Seturo, Rameka Poihipi, Alex Nankivell, Emoni Narawa, Damian McKenzie
RESERVES: Bradley Slater, Ollie Norris, John Ryan, Naitoa Ah Kuoi, Samipeni Finau, Cortez Ratima, Daniel Rona, Shaun Stevenson
Referee: Nic Berry
Assistant Referees: Damon Murphy, Matt Kellahan
HOW TO WATCH ACT BRUMBIES v CHIEFS
The Brumbies' clash with the Chiefs will be shown LIVE on Stan Sport and the Nine Network.
Coverage will be live and ad-free on Stan Sport, slated to start at 7:00 pm with kickoff expected at 7:35 pm.
The game will also be shown on free-to-air television on 9Gem, with coverage beginning at 7:00 pm