OXFORD City Lions were controversially beaten 3-2 by Kosovan side FC Feniks in their UEFA Futsal Cup preliminary group H opener in Andorra.
Antonio Medina Ortega fired the English champions into an 11th-minute lead.
But Azem Brahimi levelled, before Narcis Alibegu made it 2-1.
David Parente deservedly equalised after the break, with a stunning strike into the top right corner.
But the decisive goal came in controversial circumstances, as the referee failed to award Lions a clear penalty, allowing Michal Belej to race free and cross for Marcelo Dos Reis Soares to net the winner.
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