A millionaire gamer from Hong Kong who was once world champion of the massively popular game League of Legends is being sued for breach of contract by his former employer who wants to ban him from joining other “electronic sports teams” for the next seven years, according to court documents. Kurtis Lau Wai-kin , whose five-member team topped the League of Legends World Finals in 2012 and pocketed US$1 million in prize money, was accused of breaking his contractual obligations. In a writ filed with Hong Kong’s High Court on Thursday, Wealthy Tactic Limited and Hong Kong Esports Limited claimed Lau – better known by his code name Toyz – breached his duty as an employee. The companies, which organised video game events, stated that they entered into a contract with Lau on August 23, 2013 in which the player agreed to be a trainer for them in professional competitive video game tournaments. They added that Lau also agreed in a supplementary agreement, dated October 7, 2014, to compete for them in video games. But the firms stated Lau breached his fiduciary duty, without specifying what Lau had done. Wealthy Tactic and Hong Kong Esports asked the court to restrain Lau from joining and participating in any electronic sports teams other than the Hong Kong Esports team or any teams directed by them up to September 1, 2023. Apart from asking for an unspecified amount of compensation, the companies also want to exclude the player from any competing business until 2023. Lau has moved to Taiwan, according to the writ. More than 160,000 internet users follow the Facebook page of the home-grown video game guru. Recent media reports said the 24-year-old was embroiled in a bitter row with his former bosses.