Chelsea's challenge to the English premiership title has suffered a major setback. Defender and team's capitan John Terry has undergone back surgery. His club says it has been successful but he could be sidelined for several weeks.

Terry has missed the blues last four games due to the injury. They have won three and drawn one of those but have conceded six goals. Terry's absence along with injured goalkeeper Petr Cech gives boss Jose Mourninho a defensive headache.

Chelsea’s side trail Manchester United by four points at the top of the table.