Or, rather, not so friendly...

http://news.bbc.co.uk/sport1/hi/football/teams/q/qpr/6341485.stm

OK, there was some irritation, fouls and bad play between the sides but it was a Chinese player who jumped on a QPR one, wrapped his legs about his waist and started pummelling him that started the brawl. a lot of the other players joined in, as did some of the spectators. Ended up with a Chinese defender KOed and his jaw cracked.