Every amateur photographer (and maybe a few professionals) has a shot he chose not to fire. In my case it is a brutal knock-out on a Mixed Martial Arts match. As official photographer of the event I was allowed to wander around the venue with no restriction (but jumping on the ring). During the second round I sensed that something was going to happen: the fighters started trading heavy punches at close distance and the temperature of the match raised suddenly hot. The crowd went mad, inciting the two men to hit harder and harder. All of a sudden, a hook at the jaw shut down the light of one…