Nordea Open - Bastad
Bastad
EFG Swiss Open - Gstaad
Gstaad
Mifel Tennis Open - Los Cabos
Los Cabos
UniCredit Iasi Open - Iasi
Iasi
European Open - Hamburg
Hamburg
San Marino Challenger
San Marino Challenger
Bunschoten Challenger
Bunschoten Challenger
Granby Challenger
Granby Challenger
Pozoblanco Challenger
Pozoblanco Challenger

M15 Tsukuba

25-Mar
2019

Hard

Top Seeds

PAST
CHAMPIONS 2019
Imai 2018
Watanuki
Past Champions
  • 2025
  • Hyeon Chung
  • Chung Kumasaka
  • d.
  • Kumasaka
  • 6-4 3-6 6-1
  • 2024
  • Shiraishi Isomura
  • d.
  • Isomura
  • 6-1 6-3
  • 2023
  • Yu Hsiou Hsu
  • Hsu Shimabukuro
  • d.
  • Shimabukuro
  • 7-65 6-4
  • 2019
  • Imai Yamasaki
  • d.
  • Yamasaki
  • 6-4 6-4
  • 2018
  • Yosuke Watanuki
  • Watanuki Tokuda
  • d.
  • Tokuda
  • 7-5 6-1

Past Champions

Hyeon Chung
2025
Hyeon Chung
2024
Hikaru Shiraishi
 Yu Hsiou Hsu
2023
Yu Hsiou Hsu
2019
Shintaro Imai
 Yosuke Watanuki
2018
Yosuke Watanuki
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