Mystery surrounds the departure of high performance guru Alex Corvo from the Warriors.

The club say he is returning to Australia for family reasons, but the Herald understands that some negative feedback from the playing group may have also been a contributing factor.

Corvo was the head of performance (head trainer) at the Auckland club, after arriving to much fanfare before the 2018 season.

The former Raiders player was credited with the upswing in performances that year, as the Warriors looked fitter and had more endurance than in previous seasons.

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But he's leaving the club after his second campaign, with

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