Adelaide has its fingers crossed key forward Josh Jenkins will be fit for the top-of-the-table Showdown on Saturday night.

A bumper crowd of more than 50,000 is expected to pack into Adelaide Oval for the 20th anniversary of the most anticipated contest in South Australia.

Both sides are flying at 2-0 through the opening two rounds, setting up a mouth-watering clash between the local rivals.

The Crows are still waiting to find out if Jenkins will be available after he suffered a rib injury in last weekend's win against Hawthorn at the MCG.

"I'm probably not in the position to say what percentage he is of playing this week, but I'm sure in the next couple of days we'll find out his progress," Crows captain Taylor Walker said.

"Fingers crossed for us he gets up and plays."

Adelaide has proven it has multiple options if any of their forwards go down.

Walker missed the side's Round One victory against Greater Western Sydney, while defender Andy Otten filled in admirably for Jenkins after he left the field against the Hawks.

"It's the beauty of our forward line," Walker said.

"If one player isn't playing well or isn't playing, our ability to score is a credit to the way we play.

"Whether he's there or not, I'm sure we'll still play the way we want."

For Port Adelaide, half-back flanker Hamish Hartlett is set to return to the Power side after missing the 89-point thumping of Fremantle through illness, while fellow defender Jasper Pittard will have a fitness test on his injured hamstring.

Oppo: Port pair likely

Power captain Travis Boak said he didn't envy the position coach Ken Hinkley was going to be in with so many players knocking down the door.

"We haven't got too many injuries, which is always great to have," Boak said.

"What we've seen with our (SANFL team) is they're in really good form and it puts pressure on our senior group and that's what you want with any good club.

"It's a great position to be in and it'll be a tough call for Kenny with guys putting their hands up."