Gamba Osaka’s victory in the Emperor’s Cup on 1 January provided the final piece of the jigsaw as they became the 30th team to qualify for the continent’ premier club competition.
The 2009 ACL will feature 32 teams in the group stages instead of the 28 in previous events. Prize money has been increased with US$1.5 million for the winners and US$750,000 for the runners-up.
Japan, China, Iran, Korea Republic and Saudi Arabia have four representatives in the competition because these countries were deemed to be the most professional in the way their leagues are run.
United Arab Emirates have three entries; there are two each from Australia, Qatar and Uzbekistan while Indonesia have one side playing in the main competition.
UAE and Indonesia also have on team each in the play-offs.
The group stage comprises eight pools of four teams each. No pool will have two teams from the same country. Groups A-D will feature West Asian and Central Asian teams while Groups E-H comprises East Asian and Asean teams.
The top two sides, after a round-robin, advance to the round of 16, in which the top teams are at home for a straight one-match, knock-out competition.
An open draw is then conducted for the quarter-finals. Home-and-away format will be used until the final, which is a one-off match in Tokyo.
The play-offs feature one team each from India, Indonesia, Singapore, Thailand and UAE vying for two berths in the 32-team draw.
AFC Champions League Participating Clubs
Main competition
Australia (two teams)
Central Coast Mariners
Newcastle Jets
China (four)
Shandong Luneng
Shanghai Shenhua
Beijing Guoan
Tianjin Teda
Indonesia (one)
Sriwijaya
Iran (four)
Persepolis
Esteghlal
Sepahan
Saba Battery
Japan (four)
Kashima Antlers
Gamba Osaka
Kawasaki Frontale
Nagoya Grampus
Korea Republic (four)
Suwon Bluewings
Pohang Steelers
FC Seoul
Ulsan Hyundai
Qatar (two)
Al Gharafa
Umm Salal
Saudi Arabia (four)
Al Hilal
Al Shabab
Al Ittihad
Al Ettifaq
United Arab Emirates (three)
Al Shabab
Al Ahli
Al Jazira
Uzbekistan (two)
Bunyodkor
Pakhtakor
Play-off competition
Dempo (India)
PSMS Medan (Indonesia)
Armed Forces (Singapore)
Provincial Electricity Authority (Thailand)
Al Sharjah (UAE)