Cristiano Ronaldo nets fourth goal of FIFA World Cup 2018 to help Portugal pip Morocco on a day of '1-0' results

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Cristiano Ronaldo celebrates after scoring against Morocco, collecting his fourth goal of the ongoing tournament. AP

Cristiano Ronaldo celebrates after scoring against Morocco, collecting his fourth goal of the...

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Cristiano Ronaldo heads the ball into the net to get Portugal 1-0 up against Morocco. AP

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Uruguay's Edinson Cavani and Saudi Arabia's Osama Hawsawi fight for the ball. AP

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Uruguay star Luis Suarez celebrates after scoring against Saudi Arabia in the 23rd minute of the game. AP

Uruguay star Luis Suarez celebrates after scoring against Saudi Arabia in the 23rd minute of the...

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Spain's Diego Costa celebrates with teammate Isco after breaking the deadlock in the second half of their fixture against Iran. AP

Spain's Diego Costa celebrates with teammate Isco after breaking the deadlock in the second half...

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Iran's Sardar Azmoun is consoled at the end of their match against Spain, which they lost narrowly by a margin of 1-0. AP

Iran's Sardar Azmoun is consoled at the end of their match against Spain, which they lost...

Cristiano Ronaldo nets fourth goal of FIFA World Cup 2018 to help Portugal pip Morocco on a day of '1-0' results [Photos]