MELBOURNE, Australia — Defending champion Jannik Sinner overcame some third-set cramping and beat Ben Shelton 7-6 (2), 6-2, 6-2 on Friday to return to the Australian Open final as he pursues a third Grand Slam title. The No. 1-ranked Sinner, a 23-year-old from Italy, fell behind in the opening set and twice was a point
