The KML (G4S Korvpalli Meistriliiga) is the premier professional basketball league in Estonia. The first Esonian basketball championship tournament was held in the 1924-25 season. The current champions are BC Kalev/Cramo. The KML league, which is played under FIBA rules, currently consists of 9 teams. In 2009, G4S, the world's largest security services provider, signed a three-year sponsorship deal with the league.