Safety precautions for throw-ins.

Unfortunately no pictures explaining how the fuck it happened.

Its clear that he was wearing wafer thin plimsoles though. Still I cannot imagine even a barefoot being impaled on a brake lever. Hand brakes are definetely not inherently dangerous, definetely not anymore than riding fixed or a coaster brake which tend to have a "free coasting" spot.

Twisted ankles and torn up knees could easily occur with someone foot not clipping out of their pedals in time when then fall. Feet and hands can easily get stuck in wheels causing injury, should discs be mandatory?

The actual ball can be pretty lethal considering air shots are fairly common. Even a helmet wont protect the face. Mallet ends or handlebars could easily gouge out somebodies eyes in a common crash.

Disc brakes are really fucking dangerous.

What's the point you're making? all I can see there is a litany of maybes and what-ifs.

Any activity has a degree of risk that you assess and take precautions for - you can deconstruct any sport and point out many potential hazards

the truth is that you're more likely to spanner yourself dicking around playing footie with your mates in the park than playing bike polo

there will always be the occasional 'freak' accident but that's life

Polo is cool and pretty self-regulating and you will get the odd bump and bruise but no more than any other sport so don't be put off by that^^^^^^