Atlantic City’s Borgata casino wants poker pro Phil Ivey to ante up $15.5m in illicitly obtained baccarat winnings and “expectation damages.”

Last month, Judge Noel Hillman ruled that Ivey (pictured) and his female accomplice had violated the terms of Ivey’s contract with the Borgata by the practice of edge-sorting. Ivey won millions over four sessions of baccarat at the Borgata in 2012, money the casino originally paid out but filed a lawsuit to reclaim two years later.

Edge-sorting occurs when a player identifies irregularly cut playing cards by the minute variations that occur in the designs on their flip side. Ivey requested that the casino use a specific brand of cards and an automated card shuffler. Once Ivey and his accomplice Cheng Yin Sun identified a high-value baccarat card, they requested that the card be reoriented before being fed back in the shuffler, thereby allowing the pair to more easily identify the card when it re-entered game play.

Hillman ruled that the pair’s antics hadn’t violated the law but had violated the New Jersey Casino Control Act and thus the terms of their contract with the Borgata. Hillman set a 20-day window in which the Borgata was to submit a list of damages.