This story first appeared on afl.com.au

PORT Adelaide faces a selection squeeze, while 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, but it's the Power's unbeaten start that is the most surprising.

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. 

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." 

The Power didn't begin the season with high external expectations, but Boak said he wasn't surprised by the way they had started the year.

"What's pleasing for us is we've played eight really good quarters," he said. 

"Consistency has been the biggest thing.

"The wins are great and the four points are what we play for, but the most pleasing thing for our club and our group is we've played eight really good quarters and stuck to what we set out to do as a plan." 

The Crows are 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." 

The Crows have showed they have multiple options if they are without one of their key attacking weapons.

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."

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