Paula Radcliffe predicts marathon classic and sees threat to her record

• Radcliffe has held world women's marathon record for 15 years• Mary Keitany and Tirunesh Dibaba will have male pacemakers Paula Radcliffe has conceded her world marathon record is under real threat in Sunday's London race but says Mary Keitany and Tirunesh Dibaba may blow their chances by taking each other on too early in the contest. Radcliffe's time of 2hr 15min 25sec, set with the aid of male pacemakers, has stood unchallenged since 2003. But having run 2:17:01 in a women's-only race la...