US Open champion Emma Raducanu extended her Grand Slam winning streak to 11 matches after a 6-0, 2-6, 6-1 win against ex-world number three Sloane Stephens in women's singles first round at Australian Open 2022 on Tuesday. "It was a tough match-up for a first round," she added. It is 19-year-old Raducanu's debut in the season's first Grand Slam.