The Brumbies boast the equal biggest representation in the Wallabies 23-man squad to play in a series-deciding match against the British and Irish Lions at ANZ Stadium on Saturday night.

The Brumbies and the NSW Waratahs have seven players lining up in the biggest match in Australian rugby since the 2003 World Cup final. It's a massive turnaround from two years ago when the Brumbies had just three players in a 30-man Wallabies squad for the World Cup.

''The thing is there are even more guys who could potentially play at that level,'' Brumbies and Wallabies great Stephen Larkham said.

''I'm sure over the next year we'll have more guys over the next few years to be a part of those Wallabies squads.

''The message right from the start was that team success creates individual success, most of the guys got picked on the back of Brumbies success this year, but you look at why we've had success and it's because those guys have been consistent.''

The Brumbies have been rewarded for their Super Rugby form and they will play in the finals for the first time in almost a decade when they resume their campaign.

There are nine Brumbies in the Wallabies training squad after Peter Kimlin and Scott Sio missed out on a berth in the series against the Lions. In addition, regular Test players David Pocock and Pat McCabe are out for the rest of the year and Nic White (shoulder) and Dan Palmer (foot) had their Wallabies hopes dashed by injury.

The Brumbies' seven-strong representation for the clash against the Lions is their biggest in a game-day squad since the spring tour in 2010.

Veteran flanker George Smith leads the charge on his international comeback. Smith hasn't played for the Wallabies since retiring from Australian rugby three years ago.

But the Brumbies recruited him this year to bolster their Super Rugby title hopes and he will earn his 111th Test cap on Saturday night before retiring from national duties again.

Stephen Moore, Ben Alexander and Ben Mowen have been some of the most consistent performers in the forward pack, while Christian Lealiifano kicked the match-winning conversion last weekend.

NRL convert Joseph Tomane has kept his place on the wing, while Jesse Mogg is aiming to cap a spectacular rise from Canberra club rugby to international duties when he sits on the bench.

McCabe, Alexander and Moore were the Brumbies' representatives when Jake White took the coaching reins in Canberra at the end of the 2011 season.

''Jake said at the very start of his time that he wanted to make more Wallabies,'' said McCabe, who's recovering from a fractured neck.

''It's a huge credit to the whole group and the coaching staff.''

The Brumbies play their last regular-season game away to the Western Force on July 13.