Iga Swiatek battled past a gritty Katerina Siniakova in straight sets at the Australian Open on Monday to launch her quest for a sixth Grand Slam title and first at Melbourne Park. The world number two, who served a one-month doping suspension last year and lost her top ranking to Aryna Sabalenka, beat the 46th-ranked Czech 6-3, 6-4 at the …
