Both sides avoided Japanese powerhouses Gamba Osaka and Kashima Antlers, as well as Korean champions Suwan Samsong.

The Jets have perhaps the easier group, drawn in Group E along with Korea's Ulsan Hyundai, Japanese outfit Nagoya Grampus and Chinese team Beijing Guoan.

Ulsan and Beijing both finished in third place in the Korean and Chinese leagues respectively, while Nagoya will be making its first appearance in the Champions League.

The Mariners meanwhile, have been drawn in Group H and will face Korean team Pohang Steelers, Japanese side Kawasaki Frontale and China's Tianjin Teda.

The Steelers were of course beaten by Adelaide United home and away in the group stage of last year's tournament. Tianjin finished fourth in its league, while Kawasaki was runners-up in the J-League.

The format has changes slightly from previous years, with the top two teams from each group advancing 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.

Prizemoney has been increased for the lucrative tournament with $1.5 million going to the winners and $750,000 to the runners-up.