Oestberg, Iversen win mass start races in Tour de Ski
OBERSTDORF, Germany — Norwegians Ingvild Flugstad Oestberg and Emil Iversen won mass start races on the fifth stage of the cross-country Tour de Ski on Thursday. Oestberg, who won her third successive distance event, extended her lead in the seven-stage competition to 57 seconds over compatriot Heidi Weng, who was 11th in Oberstdorf. Oestberg finished