Kazan (Russia) (AFP) - China's Ning Zetao was the shock winner of the men's 100m freestyle gold at the world swimming championships on Thursday.Ning touched the wall in 47.84 seconds as Australia's Cameron McEvoy, who had been fastest in the heats and semi-finals, settled for silver at 0.11sec with Argentina's Federico Grabich earning bronze at 0.28.Join the conversation about this story »