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LONDON, ENGLAND - OCTOBER 01: Cheikhou Kouyate of West Ham United checks on the stricken Sam Byram during the Premier League match between West Ham United and Middlesbrough at London Stadium on October 1, 2016 in London, England. (Photo by Arfa Griffiths/West Ham United via Getty Images)

LONDON, ENGLAND - OCTOBER 01:  Cheikhou Kouyate of West Ham United checks on the stricken Sam Byram during the Premier League match between West Ham United and Middlesbrough at London Stadium on October 1, 2016 in London, England.  (Photo by Arfa Griffiths/West Ham United via Getty Images)