Reigning Super Rugby champions the Waratahs claimed a key victory over the Brumbies in Canberra as Bernard Foley's second-half penalty made the difference.
The Sydney-based Waratahs' 13-10 win took them just one point behind Australian conference leaders the Brumbies, with a game in hand.
A fiercely-fought encounter had been predicted, and it did not disappoint, with both teams producing performances built around fierce commitment.
It was the Brumbies, though, that assumed early control when Wallabies centre Christian Leali'ifano made a searing break, and his creativity was finished off by wing Joe Tomane.
Leali'ifano added the conversion for a 7-0 advantage, but the Waratahs hit back when Australian Test cap centurion Adam Ashley-Cooper posted a try that Bernard Foley converted.
It became an attritional battle after that, with rival openside flankers David Pocock and Michael Hooper to the fore, and it remained all square when a Leali'ifano penalty was cancelled out by a Kurtley Beale strike.
Foley then re-assumed the kicking duties to edge the Waratahs back in front, and although the Brumbies staged a full-blown finale that saw them push for victory, the visitors held out to claim an important win as they target a successful title defence.