The trio, Southeast Asia's three representatives at the tournament, was drawn together in Group C, which already promises to serve up some tantalising encounters given the other team completing the quartet are defending champions South Korea.
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Given their geographical proximity, Malaysia, Vietnam and Thailand regularly face off across all age categories with their most recent encounters coming at senior level at last year's AFF Suzuki Cup 2020 -- Southeast Asian football's premier tournament.
On that occasion, Vietnam defeated Malaysia 3-0 in the group stage but were then defeated over two legs in the semifinals by Thailand, who went on to claim a record-extending 6th AFF crown.
The AFC U-23 Asian Cup, previously known as the AFC U-23 Championship, will hold its fifth edition from June 1 to 19 in Uzbekistan, with all four former champions competing.