Mohamed Salah came off the bench to score his first Chelsea goal in a thumping 6-0 win over Arsenal in the Premier League. The January recruit slid home the sixth of the day for his side, only three minutes after replacing Brazil's Oscar. Leaders Chelsea were largely helped by the early sending off of Arsenal defender Kieran Gibbs, who mistakenly received red after Alex Oxlade-Chamberlain handled the ball on the line. Oscar (twice), Eden Hazard, Andre Schurrle and Samuel Eto'o were on target for Jose Mourinho's side. Salah goal