The 2002–03 season saw the Asian Club Championship, Asian Cup Winners' Cup and Asian Super Cup combine to become the AFC Champions League. League champions and cup winners would qualify for the qualifying playoffs with the best eight clubs from East Asia and the eight best clubs from West Asia progressing to the group stage. The first winners under the AFC Champions League name were Al-Ain, defeating BEC Tero Sasana 2–1 on aggregate. In 2004, 29 clubs from fourteen countries participated and the tournament schedule was changed to March–November. In the group stage, the 28 clubs were divided into seven groups of four on a regional basis, separating East Asian and West Asian clubs to reduce travel costs, and the groups were played on a home and away basis. The seven group winners along with the defending champions qualified to the quarterfinals. The quarter-finals, semi-finals, and finals were played as a two-legged format, with away goals, extra time, and penalties used as tie-breakers.