WATCH: Chelsea fans livid after sickening challenge by Arsenal’s Ospina on Pedro

Ouch.

Chelsea may have comfortably underlined their superiority over Arsenal in the Far East, but their supporters were furious after witnessing one of the worse challenges you're likely to see in a friendly game - or any game for that matter. The two London giants came up against each other in the Birds Nest stadium in Beijing on Saturday, as the showcase event of their China visit, and the game was certainly played in a gung-ho competitive manner. Despite the heat and humidity, both teams kept the tempo high and their challenges full-blooded. But David Ospina's challenge on Chelsea's Pedro was beyond anything you'd expect in a game of football.   https://twitter.com/ArsenalFC_fl/status/888732823213027328 Arsenal's keeper came charging out of his six-yard box, and clattered into the former Barcelona man with his full force. The velocity at which he was travelling meant that Pedro took a brutal knock and a stretcher had to come on. After some initial medical support to check that he was okay and fully conscious, it was decided that he be taken off to undertake precautionary examination. It was more clumsy than vicious from Ospina, but that didn't help the bloodied Chelsea man much. As you see below, Blues' fans everywhere were not best pleased. https://twitter.com/akinolarj/status/888734244532629504 https://twitter.com/akinolarj/status/888739439396225025 https://twitter.com/falsewinger/status/888732950581227520 https://twitter.com/Chelsea_HQ/status/888732211775778816 https://twitter.com/Chelsea_HQ/status/888732433113378818 https://twitter.com/fkhanage/status/888733284917805056 https://twitter.com/daraobriain/status/888740550651912192