Maro Itoje a doubt for start of Six Nations after suffering broken jaw

• Saracens forward will see specialist after injury during defeat to Harlequins• Itoje could miss up to 10 weeks, including England’s opener against ItalyMaro Itoje is a doubt for the start of England’s Six Nations campaign after Saracens confirmed he suffered a broken jaw during the club’s 20-19 defeat by Harlequins last Sunday.Itoje left the field early in the second half with blood pouring from his mouth and was taken to hospital where scans have revealed a fracture. England begin the defence of their Six Nations title away to Italy on 4 February and the top-end of the recovery timeframe fo…