That's why the inspirational ACT Brumbies co-captain couldn't stop smiling when he ran out next to brother Lix and some of his closest mates in a fourth-grade fixture in chilly conditions.

It was as far removed as you could imagine from the professional rugby arena Lealiifano eventually hopes to return to after being diagnosed with leukaemia almost a year ago.

But it was perhaps the most important and emotional moment as he joined Lix and friends for an 80-0 rout against Royals.

When Lealiifano started his cancer battle, one of his goals was to be able to play at least one more game with those he considers family.

It was the second game Lealiifano had played since his diagnosis after he surprised the rugby world last week when he joined the Brumbies for an exhibition match in Singapore.

But his game for the Tuggeranong Vikings with mum Mafa on the sideline and Lix by his side was all about fun.

Lix and former Tuggeranong premiership-winning teammate Beau Mokotupu came out of retirement for the game. It was the first time in almost 10 years Christian and Lix had played in the same team.

"Christian was really positive when he got the initial diagnosis and one of the things he spoke about was playing with the boys again," Mokotupu said.

"As the brothership we are, we all agreed that when he was ready we'd all get back out there and make it happen.

"Christian has always been upbeat and that rubbed off on everyone. Christian said he wanted to play, we believed him and there was never a doubt in our mind we'd be out there together.

"Sport was put aside. The feeling to run out with him again was something special. It was bigger than sport. It was the end of one part of the journey ... it was just like back in the day."

Brumbies coach Stephen Larkham watched from the sideline and will meet with Lealiifano on Sunday to discuss the potential of making a Super Rugby comeback in Brisbane on Friday night.

Lealiifano was never going to launch his bid for selection from a fourth grade match, although he showed he's still got his goal-kicking boots after nailing some sideline conversions.

The game was more about fun and playing for the love than trying to prove a point or find form.

Lealiifano smiled as he ran behind play, laughed after missing goal kicks and was happy to play at a fourth-grade pace to avoid a complete ambush on the unlucky Royals players.

Lealiifano embraced partner Luga when he walked off the field in the second half and hugged friends and teammates when the game ended.

Even the referee asked Lealiifano to pose with him for a photo after the match and the sight of the 29-year-old back on the field will warm the hearts of the rugby world.

"He wanted to play with his brother, that was one of his goals that he set going through the treatment," Larkham said.

"In terms of his preparation to play at that next level, this was his best avenue.

"We haven't made a decision [on his involvement in the Super Rugby season], it's a matter of sitting down with Christian and finding out what he wants to do first.

"But he did play exceptionally well [in Singapore] so it was good to see him back out there playing rugby again. We'll make a decision [on Sunday]."