In July, the Dropbears will compete at the 2016International Quidditch Association World Cup in Frankfurt.
http://www.abc.net.au/news/2016-03-30/dropbears-captain-took-up-quidditch-to-impress-a-girl/7283548
Rules of quidditch
Mixed-gender teams of seven a side.
All players must hold a broomstick between their legs at all times.
Teams are made up of three chasers, a goal keeper, two beaters and a seeker.
Chasers attempt to throw a volleyball, known as a quaffle, through their team's goal hoops for 10 points.
Beaters attempt to stop opposing players by throwing dodgeballs, called bludgers.
A player hit by a bludger must remove their broomstick and touch their team's goal hoops before rejoining the match.
Seekers attempt to catch the snitch — a ball in a sock fixed to the back of the snitch runner, who must avoid being caught by either team.
Catching the snitch wins a team 30 points and ends the game.

Not having read Harry Potter, I knew nothing of this game.
It could be pretty dangerous IMO.....
Good luck to the Dropbears.
DEB