LONDON, ENGLAND - SEPTEMBER 10: West Ham United fans and Watford fans clash during the Premier League match between West Ham United and Watford at Olympic Stadium on September 10, 2016 in London, England. (Photo by Mark Thompson/Getty Images)
LONDON, ENGLAND - SEPTEMBER 10: West Ham United fans and Watford fans clash during the Premier League match between West Ham United and Watford at Olympic Stadium on September 10, 2016 in London, England. (Photo by Mark Thompson/Getty Images)