Perth Glory's national soccer league challenge received an off-field blow when the competition leader was docked three points and fined $5,000 after being found guilty of fielding an unregistered player.

An independent three-man legal tribunal at the National Disputes Centre in Sydney's Macquarie Street, took around three hours to hear the case and make its decision.

The Tribunal determined German mid-field import Andre Gumprecht had not been properly registered for the Glory's first round game against Parramatta on September 21 in Sydney, which the West Australian club won 2-0.

The result was overturned with Parramatta awarded a 3-0 victory and Perth fined $5,000 for the breach.

Perth, which previously held a three-point competition lead, is now level on points with defending champion Olympic Sharks, though the Western Australian side retained top spot on goal difference.

The club strongly believes that the issuing of a registration number meant Gumprecht was registered to play in the game.

However, Glory officials decided not to appeal.

"In sport you do not always agree with the referee's decision but you have to get on with the game," said chief executive Jeff Dennis in Perth.

"It is a desperately disappointing way to lose three points that the players worked so hard to win. It will be sad if this matter influences the final standings.

"I would reiterate that Perth Glory has never had a transgression and given the depth of our squad had no reason to transgress in round one.

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