Ulsan Hyundai have snuck past Sydney FC 1-0 to end the Sky Blues' hopes of Asian Champions League progression.
Needing at least a point to push for a place in the knockout stages, Steve Corica's side were allowed to start brightly in Ulsan with Paulo Retre rifling a good chance high and wide early for the visitors.
Top of Group H, Ulsan were content to sit back for much of the first half but did force Andrew Redmayne into a save in the 41st minute after they tried their luck from distance.
After the break, the hosts would take the lead after a fast counter saw Manchester City loanee Mix Diskerud backheel the ball home from close range in the 59th minute.
Sydney almost equalised just five minutes later with Anthony Caceres' shot from close range hitting Ulsan keeper Oh Seung-hoon in the face and bouncing clear.
In the 70th minute, Sky Blues substitute Daniel De Silva forced another save out of Seung-hoon as Sydney desperately searched for an equaliser.
Reza Ghoochannejhad should have equalised for the Sky Blues late on only for his chipped finished to be cleared off the line as Sydney fell to a 1-0 loss that ends their hopes of escaping Group H.
The Sky Blues sit bottom of the group with one game remaining and though they're only three points shy of second-placed Shanghai SIPG, wouldn't be able to progress at the expense of the Chinese side due to their head-to-head record.