Dominant defending champion Aryna Sabalenka on Tuesday stormed past ninth seed Barbora Krejcikova, setting up an intriguing Australian Open semi-final with Coco Gauff. The world number two was untouchable in a commanding 6-2, 6-3 victory on Rod Laver Arena, reaching the last four at a Grand Slam for the sixth consecutive time. She will meet Gauff next in a replay of last year's US Open final, which the American teenager won in three sets. After that defeat when favourite at Flushing Meadows, Sabalenka made clear she wants to ensure she is not a one-hit wonder.