ROBBIE GRAY will be rested from Saturday's trial game against St Kilda as the sole change to the original squad.

Port Adelaide senior coach Ken Hinkley confirmed Gray's withdrawal saying there was no concerns attached to the elusive forward's resting.

Preview

"Robbie's got a sore back," said a matter-of-fact Hinkley.

"If it was Round 1 tomorrow then he would be playing, but we figure it's just a trial match so we need not take any risks.

"He'll be fine for next week."

Port Adelaide will host two trial games at Alberton Oval on Saturday morning.

The Magpies will take on the Panthers in the first game commencing at 9:45am before the Power goes head-to-head with the Saints at 12:30pm.

See the squads

Port Adelaide will provide ongoing coverage of both games on site and on social media.

Tickets cost $10 for members, $15 for non-members with children under 18 admitted free.