Nishioka elimates Britain's Evans in Korea Open
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The world number 25 quickly conceded the first set 6-2, before putting up a fight in the second set to push the match to a 6-6 tiebreaker that world number 56 Nishioka eventually won.
The match lasted one hour and 49 minutes.
This is the fifth time that the two players have faced each other, Nishioka having won all five previous times.
Nishioka is currently world number 56 and reached a career-high of number 48 in February 2020. He became the top Japanese player in June of 2021 and still holds that spot.
Nishioka will face either Taro Daniel or Emilio Gomez in the round of 16.