Felipe Jorge netted a stoppage-time winner as Al Sadd claimed a 2-1 win over Al Siliya to move two points behind Qatar League leaders Al Gharafa.
Jorge struck the opener after 60 seconds and, after Alexander Souza had equalised, struck again for a last-gasp winner.
Elsewhere, Qatar SC climbed to fourth with a 2-0 win over Al Ahli courtesy of goals from Abdullah Al Kowari and a penalty from Sebastian Soria.
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