The comeback continues. Sloane Stephens extended her career-best run in Queens, and is now just two wins from her first Grand Slam title, following the young American’s quarterfinal U.S. Open win, 6-3, 3-6, 7-6 (4), over 16th-seeded Anastasija Sevastova, at Arthur Ashe Stadium. Stephens, one of four American women to reach the quarterfinals, became the...