Double Olympic gold medalist Björn Lind of Sweden has announced his retirement from professional cross-country ski racing. The man who perhaps is best remembered for his dynamic double pole finish in the team sprint at the 2006 Olympic, where he became fully airborne with each stroke – a technique he referred to as “yumping” – leaves the sport after 10 years on the World Cup circuit. Lind won the individual skate sprint at the 2006...