REIGNING Port Adelaide club champion Jackson Trengove is set to return to the Power's line-up to face Essendon on Saturday, flying through the week's main training session on Thursday after missing round one because of a broken finger.

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Trengove fractured his finger in the Power's final NAB Cup match against Melbourne, but midfielder Hamish Hartlett said he was likely to slip straight back into the side.

"He'll certainly bolster our defence," Hartlett said.

"Obviously Paul Stewart played on a tall last week, which probably wasn't ideal … but having 'Jacko' back as that third tall will be great for us this week."

The news wasn't so encouraging for gun forward Robbie Gray, who will miss another week due to a strained hamstring.

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Gray had enjoyed a perfect pre-season and looked in career-best form prior to the season opener, but tweaked his hamstring in the lead-up to Port Adelaide's clash with St Kilda.

"Robbie didn't train today, so we usually look at guys trying to get through main sessions before they play," Hartlett said.

"It looks as though he'll probably miss another week, but he'll be all right."