Hazard's brace helps Chelsea win 4-0; Arsenal beat Tottenham
Chelsea's Belgian midfielder Eden Hazard scored in either side of half-time to help the defending champions beat West Brom 4-0 in the Premier League on Saturday. Arsenal defeated rivals Tottenham 2-0 in the first north London derby of the season. Elsewhere, Mohamed Salah's brace guided Liverpool to a 3-0 win over Southampton, their third consecutive league victory.