My guess is that photo is of a rugby skirmish.
Image from a few years ago during an English (Guiness) Premiership Match.
My former roommate has Setanta Sports on DirecTV... I cared nothing for the faggoty soccer he would record/watch... but staying up late and watching 6 Nations Rugby or Aussie Rules Football, live, was AWESOME.
I can not imagine the conditioning required to endure that sort of continuous action. I mean, if someone is hurt... play continues while they attend to the wounded... what amazing athletic prowess these guys have.