European Champions League (ECL) is the seasonal table tennis competition for the highest ranked European club teams and is regarded as the most important international club competition in Europe. It is organised by the European Table Tennis Union (ETTU) and replaced the European Club Cup of Champions (ECCC), the previous prominent club competition, since the 1998/99 season. Originally there was only a men's competition; a women's competition was introduced in the 2005/06 season. The competition starts in September and the champions are usually determined in May in recent years.