query: What is the biggest event in the Australian Football League?
passage: Australian Football League
The league currently consists of 18 teams spread over five of Australia's six states (Tasmania being the exception). Matches have been played in all states and mainland territories of Australia, as well as in New Zealand and China (although no professional teams or leagues exist outside Australia) to promote the sport abroad. The AFL season currently consists of a pre-season competition (currently branded as the "JLT Community Series"), followed by a 23-round regular (or "home-and-away") season, which runs during the Australian winter (March to September). The team with the best record after the home-and-away series is awarded the "minor premiership." The top eight teams then play off in a four-round finals series, culminating in the AFL Grand Final, which is held at the Melbourne Cricket Ground each year. The grand final winner is termed the "premiers", and is awarded the premiership cup. The current premiers are the West Coast Eagles.
passage: History of the Australian Football League
The Australian Football League is the top professional Australian rules football league in the world. The league consists of eighteen teams: nine based in the city of Melbourne, one from regional Victoria, and eight based in other Australian states. The reason for this unbalanced geographic distribution lies in the history of the league, which was based solely within Victoria from the time it was established in 1897, until the time the league expanded through the addition of clubs from interstate to the existing teams starting in the 1980s; until this expansion, the league was known as the "Victorian Football League".