Yang Ya-yi (; born 30 May 2004) is a Taiwanese tennis player.
She has a career-high junior singles ranking by the International Tennis Federation (ITF) of 4, achieved on 26 December 2022. Her career-high by the Women's Tennis Association (WTA) is 203, achieved on 16 October 2023. On 18 September 2023, she peaked at No. 289 in the WTA doubles rankings.
Yang, who started playing tennis when she was three years old, represents the colours of Chinese Taipei in the Billie Jean King Cup.
Career Junior Grand Slam performance - Singles: Australian Open: 2R (2020) French Open: – Wimbledon: – US Open: 1R (2021)
- Doubles: Australian Open: 2R (2020) French Open: – Wimbledon: – US Open: 1R (2021)
Professional Yang made her WTA Tour debut at the 2023 Guadalajara Open, where she entered the main draw as a qualifier, losing in the first round to fourth seed Lucia Bronzetti.
ITF Circuit finals Singles: 10 (6 titles, 4 runner-ups) LegendW40 tournamentsW25 tournamentsW15 tournaments ResultW–LDateTournamentTierSurfaceOpponentScoreWin 1–0 May 2022ITF Cairo, EgyptW15 Clay Melanie Klaffner 6–3, 6–3Loss 1–1 May 2022ITF Cairo, EgyptW15 Clay Noma Noha Akugue 1–6, 1–6Loss 1–2 Jun 2022ITF San Diego, United States W15 Hard Han Jiangxue 2–6, 6–4, 4–6Win 2–2 Jul 2022ITF Fountain Valley, USW15 Hard Makenna Jones 6–2, 6–2Win 3–2 Jun 2023ITF Tainan, TaiwanW25 Clay Lee Ya-hsuan 6–3, 6–1Win 4–2 Jun 2023ITF Tainan, TaiwanW25 Clay Lee Pei-chi 6–2, 6–1Win 5–2 Jul 2023ITF Hong Kong, China SARW25 Hard Eudice Chong 1–6, 6–2, 6–1Win 6–2 Aug 2023ITF Hong KongW40 Hard Mananchaya Sawangkaew 6–3, 4–6, 6–3Loss 6–3 Oct 2023ITF Nanao, ChinaW40 Carpet Ma Yexin 6–7(6), 7–6(0), 0–6Loss 6–4 Aug 2025ITF Lu'an, ChinaW15 Hard Jeong Bo-young 4–6, 2–6
Doubles: 10 (6 titles, 4 runner-ups) LegendW25/35 tournamentsW15 tournaments ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin 1–0 Jun 2022ITF San Diego, USW15 Hard Bunyawi Thamchaiwat Sara Daavettila Makenna Jones 6–3, 6–4Loss 1–1 Jul 2022ITF Los Angeles, USW15 Hard Bunyawi Thamchaiwat Eryn Cayetano Salma Ewing 3–6, 6–4, [8–10]Win 2–1 Aug 2022ITF Fountain Valley, USW15 Hard Hind Abdelouahid Han Jiangxue Kim Da-bin 7–5, 2–6, [10–6]Loss 2–2 Sep 2022ITF Otočec, SloveniaW25 Clay Sandra Samir Irina Khromacheva Iryna Shymanovich 2–6, 4–6Win 3–2 Oct 2022ITF Sozopol, BulgariaW25 Hard Ma Yexin Cristina Dinu Lu Jiajing 6–3, 6–1Win 4–2 Jun 2023ITF Tainan, TaiwanW25 Clay Tsao Chia-yi Monique Barry Lee Ya-hsin 6–2, 6–2Win 5–2 Aug 2025ITF Lu'an, ChinaW15 Hard Lin Fang-an Tiana Tian Deng Wang Meiling 6–4, 7–6(4)Win 6–2 Sep 2025ITF Wagga Wagga, AustraliaW35 Hard Hayu Kinoshita Erika Sema Elyse Tse 6–1, 3–6, [10–8]Loss 6–3 Jul 2026ITF Brisbane, AustraliaW15 Hard Lin Fang-an Lily Fairclough Roisin Gilheany 6–7(2), 5–7Loss 6–4 Aug 2026ITF Tianjin, ChinaW15 Hard Lin Fang-an Kamonwan Yodpetch Zhang Ruien 3–6, 6–1, [7–10]
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