CANBERRA star Carly Wilson will use the ''heartbreaking'' loss to Adelaide earlier this season as motivation when the Capitals face the Lightning in a vital clash today.

Ask Wilson which defeat she's found the toughest to digest, and she doesn't hesitate in nominating the round-four defeat.

The Capitals gave up an 11-point final quarter lead to go down 75-71, their fifth loss in six matches to start their campaign. With her team now 4-7 and in danger of losing touch with the top five, Wilson wants revenge in the city of churches today.

''Last time we played them was heartbreaking for a lot of factors,'' Wilson said.

''We didn't have the start to the season we wanted, and I thought that was the game that could have turned us around.

''Also it was the first game we played so well, and a five-minute lapse at the end cost us.''

With Hannah Bowley injured, regular guard Wilson will play big minutes at power forward to help Marianna Tolo and Brigitte Ardossi in the paint.

Adelaide boasts arguably the WNBL's best inside partnership in Suzy Batkovic and Abby Bishop, both former Canberra players.

Wilson will concede plenty of size to her Australian Opals teammates, but she believes she can use that to her advantage.

''I'm undersized and not as strong as they are, there's a lot of things they have to their advantage with me defending them,'' Wilson said.

''But you have to remember they've got to defend me as well, and being a guard they're not used to playing against someone my size.

''Obviously I'm going to need some help, if they start posting me up one foot from the basket there's not much I can do.''

Canberra warmed up for the match with a comfortable 89-72 win over minnows West Coast in Perth on Friday night.

But while the Waves are the smallest team in the WNBL, Adelaide is one of the biggest.

Ardossi played her best game for Canberra so far with 19 points and 11 rebounds, which should be a confidence boost before taking on Batkovic and Bishop today.

An upset could kickstart Canberra's season, given it plays its next six matches at home.

The Capitals are yet to beat a top-five side, but have won their last three matches against the Waves (twice) and AIS.

''It's not a complete disaster and not all over if we don't get it [a win], but it'd give us four in a row and some real momentum,'' Canberra skipper Jess Bibby said.

''We're confident we can do a job on Suzy and 'Bish' [Bishop] because we played them pretty well last time.''