Toronto-listed gaming operator Amaya has vowed to challenge a ruling by a Kentucky court ordering it to pay approximately US$870 million to cover the losses incurred by Kentucky customers of PokerStars between 2006 and 2011.

The litigation was filed by the Commonwealth of Kentucky in 2010 and sought recovery of alleged losses by Kentucky residents who played real-money poker on PokerStars' website between 2006 and 2011. The judge imposed a $290m award, which he trebled to approximately $870m excluding interest and applicable costs.

Amaya said Thursday that the ruling, which is based on a 200 year old Commonwealth law, is in stark contrast to the same trial court's decision last month, when it determined that damages should be based on the net losses of players.

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