LONDON >> Ten-time World Series of Poker winner Phil Ivey has lost his case against a British casino he accused of improperly withholding his winnings.

Britain’s High Court ruled Wednesday that Genting Casinos UK does not have to pay him the $12.4 million he was seeking.

The casino’s lawyers convinced the court that Ivey’s used of “edge sorting” tactics was not legitimate and that the casino did not have to pay. The casino said he essentially kept track of card values by watching for design imperfections on the backs of the cards.

The 38-year-old Ivey said he was disappointed with the ruling. He claims he won the money during two days of playing baccarat at Crockfords, a Mayfair casino that is part of the Genting group, in August 2012.