PORT Adelaide coach Ken Hinkley insists it's time for the Power "stand up" when they face North Melbourne on Saturday afternoon.

Despite losing three of its last four, Port remains a mathematical chance of playing finals this season.

The Power's form has improved significantly compared to the start of the season, but narrow losses to good sides have prevented them from mounting a genuine assault on the top eight.

The Power were competitive against Hawthorn last weekend but ultimately fell 22 points short.

On Friday, as the side flew to Melbourne, Hinkley declared enough was enough and that he and his side had to prove themselves.

"When you get opportunities against the top sides you want to be able to prove that you actually can beat them," Hinkley said.

"It's no good, 'Oh look we get close, we get near it, we think we're good enough' – eventually you've just got to do it.

"It's on me, it's on the whole squad that goes over there to play, we're all in it together and we need to be able to stand up."

North Melbourne will enter Saturday's game with three huge inclusions in Nick Dal Santo, Daniel Wells and Jarrad Waite.

All three are capable of winning the game off their own boot in peak form and Hinkley said the quality in has his side on high alert.

"You know what sort of player Dal Santo and Wells and Waite are, you know what they're capable of so it puts you on a heightened alert that you have to be at your absolute best," he said.

"It'll be a team job that has to get done for us to be successful tomorrow against the Kangaroos."

Port midfielder Brad Ebert has been left out of the club's side after a heavy fall against the Hawks forced him into hospital with a bruised lung.

Hinkley said the nine-day break between last Thursday night's game and Saturday's almost gave Ebert enough time to recover but that the Power wouldn't take a risk with such an injury.

Brendon Ah Chee and Sam Gray were brought in to provide midfield help against the Kangaroos