Emma Raducanu suffered the joint-heaviest defeat of her career as second seed Iga Swiatek demonstrated her superiority in a one-sided Australian Open third-round match. Britain’s Raducanu was thrashed 6-1 6-0 in a chastening afternoon on Rod Laver Arena. The world number 61 lost serve five times as Swiatek took just 70 minutes to secure victory. […]