NEW YORK — World No. 2 Aryna Sabalenka registered a comfortable 6-3, 6-3 win over Australian qualifier Priscilla Hon in her US Open opener. The reigning Australian Open champion, Sabalenka, who has reached the US Open semifinals or better in her past three attempts, will next face Italy’s Lucia Bronzetti, who advanced after New Zealand’s Lulu Sun was forced to retire after losing the first set 6-3. Against the Italian, Sabalenka owns a 1-0 head-to-head record from a straight-sets win on the hard courts of Brisbane this year. In just her second career US Open main-draw appearance, the 26-year-old Hon was swinging freely and with assertive power under the lights of Louis Armstrong Stadium. She put pressure on the No. 2 seed and matched her shot for shot, literally, as both women hit five winners and seven unforced errors in the first set. But it was Sabalenka’s first-serve win percentage (91%) that gave her the edge to take the opening frame without facing a break point. She earned an early break in the second set before Hon converted her first break point of the match to get back on serve at 3-2. and remained unbothered. The Belarusian sealed her sixth...