We all love it, no matter what...

 Quidditch, "the sport of warlocks," is the premier sport of the wizarding world. It is a fast, dangerous, exciting game in which two teams flying on broomsticks compete for points scored by throwing a ball--the Quaffle--through hoops on either end of a large grassy pitch.   

Kids often play Quidditch on broomsticks in the back apple orchard; its also played by teams of students at Hogwarts, and by professional athletes whose exploits are followed avidly all over the world. The World Cup matches attract hundreds of thousands of fans. 

Quidditch falls under the jurisdiction of the Department of Magical Games and Sports, part of the Ministry of Magic. The professional organization is called the International Association of Quidditch. Professional matches are attended by trained mediwizards and while there are many injuries, there are few deaths from Quidditch accidents. However, referees have been known to disappear completely only to turn up weeks later in the middle of the Sahara Desert. There are seven hundred possible ways to commit a foul in Quidditch, all of which occurred in a World Cup match held in 1473.
The name "Quidditch" comes from Queerditch Marsh, the place where the game originated in the 1000s. The colorful, exciting history of this thousand-year-old sport is detailed in the excellent book, Quidditch Through the Ages, now available in a Muggle edition. Please buy yourself a copy soon -- the proceeds go to a very worthy cause indeed.

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Rules of play

Quidditch is played up on broomsticks up in the air. There are three goal posts at either ends of a field. That field is called a Quidditch pitch. Three types of balls are required for a Quidditch game.

 The ball that scores the points is the Quaffle. The Quaffle is 12 inches in diameter and is made of leather bindings. The Bludger is probably the most dangerous ball of all of them. It flies through the air being hit by players called beaters. Serious injuries have been caused by Bludgers hitting people and causing them to fall off their brooms. The third and most important ball is the Golden Snitch. The Golden Snitch is a tiny ball that has wings and is enchanted. The first Snitch was a tiny bird that was very small and very tiny, but changes to the rules made it illegal to use the actual bird. The current enchanted, winged ball version of the Snitch was invented by Bowman Wright of Godric's Hollow. If the Seeker catches the Golden Snitch, his or her team earns 150 points and usually wins the match. At either end of the Quidditch pitch are three hoops through which the Quaffle can be scored. In the center of the Pitch is a circle where the balls are all thrown into the air and the match begins. As the balls are thrown, the players all gather on the ground and then kick off as the referee blows his/her whistle. During the game a player can get a foul or break a rule. Here are some fouls that a player can receive: blagging (applies to all players, it is when a player seizes opponent's broom tail to slow or hinder), blatching (applies to all players, it is when a person is flying with the intent to collide), bumphing (applies to beaters only, it is when a Beater is hitting a Bludger towards the crowd, necessitating a halt of the game as the officials rush to protect bystanders. Sometimes used by unscrupulous players to prevent an opposing Chaser from scoring).

Scoring:

On the face of it, Quidditch scoring is unfair. In fact, it's so unfair that you can barely call it a sport. Since catching the Snitch gains one side the equivalent of fifteen goals and ends the game so the other team can't counter it, Quidditch is essentially a match between the two Seekers and nothing else. So what makes it so popular? Do witches and wizards just watch it for the violence and fancy broom tricks?

Not at all. Quidditch is always played in a series. Unless you're playing a pickup game in the apple orchard, every Quidditch match is part of a larger series of matches, and accumulated points are what count toward ultimate victory. The Quidditch Cup at Hogwarts goes to the team with the most total points, not the one who has won the most matches. The standings we see in the Daily Prophet for the British League (DP) list the teams in order of how many points they have in total, from Tutshill with 750 down to the lowly Cannons with only 230. Nowhere in the standings does it note how many matches each team won. Although we don't see evidence of it, there must be a similar system for the World Cup, which would imply that Bulgaria and Ireland were the top scorers in the world that year. Would it have been possible, then, for Bulgaria to have won the World Cup with Krum's capture of the Snitch, even though Ireland won the match? Apparently so.

Quidditch equipments

pitch
Quaffle
Bludger
Golden Snitch
bats
broomsticks
Three hoops on either side of a pitch. 

Some renowned books on Quidditch

• The Beaters' Bible by Brutus Scrimgeour
• Beating the Bludgers-- A Study of Defensive Strategies in Quidditch by Kennilworthy Whisp
• Flying With the Cannons
• Handbook of Do-It-Yourself Broom Care
• He Flew Like a Madman by Kennilworthy Whisp
• Noble Sport of Warlocks, The by Quintius Umfraville
• Quidditch Teams of Britain and Ireland
• Quidditch Through The Ages by Kennilworthy Whisp
• The Wonder of the Wigtown Wanderers by Kennilworthy Whisp