The ACT Brumbies defied a massive injury toll and recorded a gritty 25-15 victory against the Cape Town Stormers to move back to the top of the Australian Super Rugby conference.

Brumbies winger Robbie Coleman scored twice to go with a penalty try in a three-tries-to-two victory at Canberra Stadium on Saturday night.

With seven players injured and Wallabies centre Tevita Kuradrani unavailable, the Brumbies relied on their outstanding depth to grind out their fourth straight win after losing their opening-round clash with the Queensland Reds.

Brumbies director of rugby Laurie Fisher said the Stormers had proven themselves to be one of the best defensive sides in the competition in recent years.