CINCINNATI (AP) — Defending champion Coco Gauff lost Thursday in her opening match at the Cincinnati Open, falling to Kazakhstan's Yulia Putintseva 6-4, 2-6, 6-4. Gauff, then 19, became the youngest Cincinnati champion last year on her way to winning the U.S. Open a few weeks later. This time, after a bye in the first round, the No. 2 seed blew a 4-2 lead in the third set and lost to Putintseva for the first time in four career meetings.