ACT Chief Minister Andrew Barr has thrown his weight behind the WNBL champions by asking asset owners to light up various landmarks in blue.

It comes as the Capitals look to book their ticket to the WNBL grand final when they face the Melbourne Boomers in a deciding semi-final at the AIS Arena on Wednesday.

The likes of Telstra Tower on Black Mountain, the Carillon and even famed nightspot Mooseheads turned green during the Canberra Raiders' run to the NRL grand final last year.

Blue and gold lights have also been seen in support of the ACT Brumbies during Super Rugby campaigns.

Now the city's chiefs are getting behind the WNBL's most successful club, with Barr writing "Asking the various asset owners to switch their lights to blue for Wednesday night. Normally a "Grand Final Week" thing, but no harm in extending to semi-finals" on social media.

The Boomers are sweating on the availability of Sophie Cunningham after she was reported for striking Keely Froling in the face during game two of the series.

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It is now in the hands of the league's incident review panel with Cunningham facing a suspension ahead of the do-or-die playoff.

Capitals coach Paul Goriss opted to stay out of the discussion on Cunningham, instead calling on the city of Canberra to get behind the club as they hunt for back-to-back championships.

"[Playing at home is] huge. We need to pack out that AIS Arena and get everybody we can. We need a lot of noise, we need a lot of support," Goriss said.

"I know the girls feed off the crowd's energy and the vibe we get in the AIS Arena. The bigger crowd we can get, it's going to help us get over the line.

"I still go back to game three [of last year's grand final] and game one of the finals series, I had goosebumps walking out onto that court.

"I know the girls are really looking forward to being at home in front of their home crowd."

Goriss concedes a degree of complacency may have crept in during game two of the series as Melbourne came out all guns blazing in a bid to save their season.

But he is confident the tide will turn when the Capitals return to the Arena - and he needn't look any further than one moment for proof.

Capitals players rushed to Froling's aid when she was struck by Cunningham after inadvertently copping an elbow from the Canberra young gun.

Emerging guard Maddison Rocci - who was on the end of an unsportsmanlike foul from Cunningham earlier this season, which was downgraded from a one-game ban to a $500 fine with an early guilty plea - seemed to have fire in her eyes.

"We're a tough, resilient group and we always stick together," Goriss said.

"That's the thing that binds our group together, there's toughness, there's resilience and they have each other's backs.

"Those things just galvanise our group."

But the Capitals won't have it all their way with rookie Gemma Potter running out of time to prove her fitness after suffering a high ankle sprain at practice last week.

Potter was slated to see a doctor and physiotherapist after the Capitals returned from Melbourne, with Goriss conceding she is a 50-50 chance at best.

"She is still struggling to put any weight through her ankle and through her leg. It's very doubtful she will play," Goriss said.

"There's still a lot of swelling and bruising, so until she can actually put her whole body weight on there, there's no way she will be playing."

WNBL SEMI-FINAL GAME THREE

Semi-final series two

Wednesday: Canberra Capitals v Melbourne Boomers at AIS Arena, 7.30pm. Tickets from Ticketek.