Karolina Muchova

American teenager beats Czech 10th seed 6-4, 7-5 to reach US Open final

American teen downs Muchova 6-3, 6-4 in WTA Cincinnati Open final

Reigning champion will attempt to become first woman to successfully defend crown in 16 years

Reigning champion sets up Muchova showdown after beating Haddad Maia 6-2, 7-6 in semi-finals

Czech docked a point for smashing her racquet before losing to compatriot Muchova 7-5, 7-5 in third round

The event was held behind closed doors, with a handful of spectators demoted to spots behind the fence

After 27 failed attempts to reach the semi-finals of a Grand Slam, the 24-year-old knew it was a case of now or never