Former AFL rising star winner Danyle Pearce was the biggest of Port Adelaide's three omissions from the final 22 named on Friday to face West Coast at Subiaco on Sunday.

It is the first time in his career that Pearce has been dropped, and captain Warren Tredrea said it was as much because of a lack of confidence as anything else.

Pearce, youngster Paul Stewart and Matt Thomas (injured) have made way for Adam Thomson, Tom Logan and Nathan Krakouer.

"We've had a number of guys not playing four quarters and it's probably just a confidence thing," Tredrea said.

"We think he's working hard enough but sometimes as we all do every player goes through those ups and downs and this is no different.

"We had a bit of a run this morning and recovery session (from main training) and he seemed in reasonable spirits, from anyone's perspective it's disappointing when that happens to you, senior or not senior, full stop, everyone wants to play."

Power coach Mark Williams again resisted the temptation to make wholesale changes after his side's disheartening loss to Brisbane, but Tredrea said that may partially have been the result of not enough players pushing up for spots at SANFL level.

"There've been a couple of changes this week, (not dramatic) but bar a couple of guys in the SANFL our options are a little bit limited because their SANFL form hasn't been as even or as high a standard as we'd have liked," he said.

"Last week that last quarter was disappointing but you can only reward people who've had stellar form and I think we've done that."

The Power will train at Subiaco on Saturday before the Sunday twilight fixture against the Eagles.

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