BEIJING — Coco Gauff won her second title this season with a lopsided 6-1, 6-3 victory over Karolina Muchova in the final of the China Open on Sunday. Aged 20, the sixth-ranked US player became the youngest China Open champion in 14 years. She is also the second American champion in Beijing, following Serena Williams’ title runs in 2004 and 2013.

Change coach. Win next tournament. Just like Coco Gauff drew it up. Taking advantage of what has become one of the biggest rarities in women’s tennis, an off-day for Karolina Muchova, Gauff took the China Open title 6-1,

With her 6-1, 6-3 victory over Karolina Muchova on Sunday, the world No. 6 captured the China Open title, her first title since winning Auckland back in January. Gauff won the title despite dropping the opening set in her first five matches.