Eden Hazard, the Belgium winger, scored a magnificent hat-trick as the Blues capitalized on the early slip-up from Arsenal, who were humiliated 5-1 at Anfield by Liverpool.
Hazard gave the lead in the 27th min, after he met a low cross from Ivanovic, leaving Krul no chance of saving it.
The Belgian doubled the lead before half-time, after he scored a superb goal, combining well with Samuel Eto’o.
He got his third in the second half, scoring from the penalty after Samuel Eto’o was fouled. Hazard slotted home with great aplomb.