Sunderland's friendly against Rangers was abandoned at half-time due to a powercut - with the Black Cats leading 1-0.
Luke O'Nien's goal sent Sunderland in ahead at the break in the opening friendly of their trip to Portugal. O'Nien, who started at centre-back against Rangers, scored just before the half-hour from a well-worked set-piece.
But the game was called off before the second-half could kick-off, with the Estadio Municipal de Albufeira suffering a total power outage that saw the floodlights go dark.