Oscar scored a first-half hat trick as Chelsea cruised to a 5-1 victory at second-tier MK Dons to reach the fifth round of the FA Cup on Sunday.

Oscar tapped into an empty net in the 15th minute after a defensive blunder, but the Dons soon leveled when Darren Potter beat Thibaut Courtois with a heavily deflected shot from the edge of the area.

Costa and Eden Hazard squandered easy chances before Oscar drilled in Chelsea's second in the 32nd minute and then smashed in a superb third just before the break after a 25-yard (meter) run that started on the touchline.

Hazard converted a penalty after the break and Bertrand Traore added the fifth.

Everton also advanced, beating fourth-tier Carlisle 3-0.

The fifth-round draw takes place later Sunday.