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Rira Kosaka

Japan

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All Girls Australian Open Girls Singles W35 Miyazaki 2 (Japan) ITF Women Singles W35 Andong ITF Women Singles W15 Sapporo 2 ITF Women Singles W15 Luan 4 ITF Women Singles W15 Luan 5 ITF Women Singles W15 Yeongwol 2 ITF Women Singles W35 Wagga Wagga ITF Women Singles W35 Wagga Wagga 2 ITF Women Singles

January 2026

Wed 21 Finished R. Kosaka 2:0 6-2 6-2 R. Cho
  1. Win
Wed 21 Finished R. Kosaka 2:0 7-5 6-4 L. V. Pop
  1. Win
Sat 24 Finished R. Kosaka 0:2 2-6 3-6 E. Tupitsyna
  1. Loss

April 2026

Wed 22 Finished R. Kosaka 1:2 6-2 3-6 4-6 Elena Micic E. Micic
  1. Loss

May 2026

Wed 13 Finished R. Kosaka 0:2 2-6 3-6 G. Jang
  1. Loss

June 2026

Wed 24 Finished M. Uemura 0:2 4-6 2-6 R. Kosaka
  1. Win
Thu 25 Finished R. Kosaka 1:2 4-6 7-5 4-6 Ying Zhang Y. Zhang
  1. Loss

July 2026

Wed 8 Finished S. Y. Choi 2:0 6-4 6-1 R. Kosaka
  1. Loss
Tue 14 Finished R. Kosaka 2:0 6-4 6-2 L. An
  1. Win
Thu 16 Finished J. Zhang 2:0 6-1 6-4 R. Kosaka
  1. Loss

September 2026

Wed 9 Finished R. Kosaka 2:0 6-2 7-5 W. Ju H.
  1. Win
Thu 10 Finished K. Yoshioka Kisa Yoshioka 2:1 6-2 5-7 6-3 R. Kosaka
  1. Loss
Wed 30 Finished H. Arakawa Haruna Arakawa 2:1 6-2 5-7 6-3 R. Kosaka
  1. Loss

October 2026

Wed 7 Finished H. Kaji Haruka Kaji 2:0 6-2 6-1 R. Kosaka
  1. Loss