In the beginning of the 20th century, figure skating was lent a more athletic character through the developments of Ulrich Salchow, a Swede. Salchow was considered the greatest figure skater of his day by far, winning the world championships ten times. The crowning achievement of his career, however, was his development of ice skates with slightly serrated blades, giving enough traction on the ice to launch long jumps. The salchow jump, still used prominently in figure skating routines today, is named for him, and was considered Salchow's greatest contribution to figure skating.
