“A fair few, would be the short answer, and we have already covered testimonials gone bad in the Knowledge before, but a few stand-out examples do spring to mind and none more so than QPR’s fracas with China’s Olympic team in 2007. China had been holding a two-week training camp in England, but seven players had to be sent home after a brawl that involved almost every player on the pitch plus a number of coaches and bystanders.” (Guardian)