Liam Austwicke was inches off target with a conversion to tie Hartlepool's latest knock-out match at the Bangkok International Sevens.
The West full-back had just touched down in the corner but was unable to add the extra points with the last kick of the tie.
It was an incredible spectacle in sweltering mid-day heat in the Thai capital as the game swung back and forth.
The Thailand team streaked away for the first score after the united down side lost possession just outside their 22.
But Hartlepool came back with a spectacular try right at the end of the first period when Alex Rochester sent his Rovers club-mate Adam Smith flying clear from 70 metres. Rochester's conversion made it 7-7.
Within seconds of the re-start, Chulalongkorn University regained the lead with a converted try.
However, never-say-die Hartlepool bounced back when Alex Bayliss, one of two guests from Hong Kong, forced his way over from a tap penalty with Cameron Lithgo's successful kick making it 14-14.
Just when Hartlepool thought they were back in it, the Thai team ran through from deep with the conversion giving them a 21-14 advantage.
With time ticking, Austwicke showed great tenacity to get over in the corner, only for the conversion to drift agonisingly wide.