Quidditch is the most famous sport in the Wizarding world from Harry Potter books and movies.
There are two ways on winning this game: You need to gather as much points as possible by hitting the Bludger into the goal or, capturing the Golden Snitch. Only one person can try to get the Snitch and that person is called a Seeker. Once you get the Snitch, your team automatically wins.
Harry Potter and his dad are known in Hogwarts for being good at the game. Later on, Ron Weasley started playing and and also started being good at it.