Roger Federer is into Australian Open final after Hyeon Chung retired, North Korean pairs skaters Ryom Tae Ok and Kim Ju Sik have won third place at the Four Continents championships in Taipei, while David Wise and Maddie Bowman have proved they’re ready to defend their Olympic half-pipe ski title’s in Pyeongchang after winning X-Games gold in Aspen and Canada's double Olympic bobsleigh champion Kaillie Humphries is ready to lead the way for their team of sliders.
