Roundup: Sinner, Swiatek win 1st round Australian Open matches amid spotlight

MELBOURNE, Jan. 13 (Xinhua) -- Defending Australian Open men's champion Jannik Sinner and women's second seed Iga Swiatek moved into the second round with straight sets victories on Monday amid fierce attention over their doping sagas.

Four-time Grand Slam champion Carlos Alcaraz, 10-time tournament winner Novak Djokovic and women's third seed Coco Gauff also launched their campaigns with opening round wins.