Are the Canberra Capitals losing their aura of invincibility? The Capitals are starting to think so, but WNBL competition leaders the Dandenong Rangers don't.

Capitals guard Kristen Veal admitted some doubts had crept into the Canberra squad after two losses in Melbourne on the weekend.

However, Dandenong coach Gary Fox declared Canberra was still "the team to beat" for the WNBL title.

Virtually untouchable in recent WNBL history, the Capitals have made the past four grand finals and have won three - including the last two.

But back-to-back losses in Melbourne on the weekend have put the Capitals in a dangerous position. With two weeks remaining in the regular season. the Capitals are now in a group of five teams fighting for three play-off positions.

Veal admitted the Capitals had realised their vulnerability after the weekend results - and it may not be a bad thing.

"I think everyone took a step back and went, 'wow we're not invincible'," Veal said. "We still need to work hard and we still need to be doing the right things. We could probably lose a top-four spot; we could lose a grand final berth; we could lose a whole lot of things, I think. inevitably, [the Melbourne trip] will be a good thing for us."

Dandenong is the only team to have guaranteed a position in the play-offs and they consolidated top spot with a 57-49 win over the Capitals on Sunday.

The Rangers have beaten the Capitals twice this season but Fox maintains the two-time defending champions are still the team to beat.

"They're a champion team with a great coach and the number one player in the world [Lauren Jackson] so we have tremendous respect for them." Fox said.

"They were killing teams earlier in the year when they were flowing and there's no doubt they're still in the driver's seat."

Capitals coach Carrie Graf said her team remained confident in its ability to win a third successive title. However, she admitted the Melbourne excursion had "put a rocket up their backside".

"This is the first real shock we've had - now it's on the line. The feelings in the next few games will be like play-off games - you have to win to stay alive." Graf said.

When asked what the Capitals must do to turn their fortunes around against Bulleen at Tuggeranong on Friday night, Graf was adamant.

"Fight. We have to fight like our life depends on it because it absolutely does. Our life as a finals championship team depends on a win on Friday night. I know we'll have that [fight] because this team does have character; they do know how to win."

The Capitals can partly take credit for this season's exciting finish by setting a bench-mark in the WNBL. Graf said it was a case of other clubs stepping up rather than the Capitals going backwards.

"I think the depth in the league is really strong." Graf said. "I think everyone's picked up a notch. [Former Capitals and Australian coach] Tom Maher even mentioned that to me earlier this year, he said the league's tougher this year. Six teams are legitimately in the mix for the play-offs and that's great for the league.

"I can guarantee you the seven teams below us want to knock us off our perch."