Karolina Pliskova upset home favourite Naomi Osaka in Tokyo on Sunday to win the Pan Pacific Open.
The newly crowned US Open champion Osaka came into the final on a 10-match winning streak, but appeared strangely nervous as Pliskova rattled off a 6-4, 6-4 win in just over an hour.
Osaka had not dropped a set in the tournament to date, but was wayward on the day. Her Czech opponent, meanwhile, played the perfect game to capitalise on her only two break points and seal a straight sets win and her second title of the season.
Pliskova took advantage of an Osaka double fault at 2-2 in the first set, while a succession of errors by the 20-year old at 4-4 in the second handed Pliskova a second opportunity she did not pass up as she served out the victory.
— WTA (@WTA) September 23, 2018
The win saw Pliskova close in on a place at the season ending WTA Finals in Singapore. She is now in ninth place in the running, with only the top eight securing a spot.
It was a second final loss in Tokyo for Osaka after defeat to Caroline Wozniacki in 2016.