Two late goals in four minutes from Thailand condemned Singapore to a 2-0 defeat in an international friendly at the King's 80th Birthday Anniversary Stadium in Nakhon Ratchasima on Thursday
Both sides wore black armbands and observed a minute of silence as a mark of respect for former Singapore Prime Minister Lee Kuan Yew, who died on Monday.
Suttinun Phukhom's 88th-minute header from a Theerathon Bunmathan free kick and a Pokkhao Anan lob over Izwan Mahbud in stoppage time floored the Lions, who had defended well till then.
The Lions were forced into a change in the first half when Afiq Yunos was forced to exit in the 32nd minute with what looked like a nasty ankle injury.
This was Bernd Stange and his men's first match after their ill-fated AFF Suzuki Cup campaign in which the Lions were booted out in the group stages after 1-2 and 1-3 defeats to Thailand and Malaysia respectively.
Singapore will next host Guam in a friendly at the Jalan Besar Stadium on Tuesday.