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Tammy Abraham (front) of Chelsea vies for the ball during the English Premier League match between Chelsea and Sheffield United at Stamford Bridge in London, Britain on Aug. 31, 2019. (Photo by Stephen Chung/Xinhua)

Tammy Abraham (front) of Chelsea vies for the ball during the English Premier League match between Chelsea and Sheffield United at Stamford Bridge in London, Britain on Aug. 31, 2019. (Photo by Stephen Chung/Xinhua)