H2H data updated: 2026-09-14 00:00 UTC

Sayaka Ishii vs Saisai Zheng

Compare the head-to-head record, career totals, season-by-season performance, and match log for Sayaka Ishii vs Saisai Zheng.

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Sayaka Ishii
Japan Age 21 Right-Handed
H2H
0 – 0
0 main-draw meetings
Saisai Zheng
China Age 32 Right-Handed 170 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Sayaka Ishii #283 6-3 6-4 Saisai Zheng #1313 Match data Aug 17, 2024 Q1 Q Tennis In the Land WTA 250 Hard

1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.

Career Comparison

Player Current Peak Pts Elo W L Win % GS 1000 including documented historical predecessor categories Finals 500 including documented historical predecessor categories 250 including documented historical predecessor categories Titles
Sayaka Ishii #466 #188 376 1,580 2 3 40.0% 0 0 0 0 0 0
Saisai Zheng #692 #34 1,585 1,776 87 133 39.5% 0 0 0 1 0 1

Career Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.

Age Sayaka Ishii Saisai Zheng
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 2011 0–2 0.0% #276 1,473 0 0
18 2024 2–2 50.0% #196 1,571 0 0 2012 2–3 40.0% #138 1,483 0 0
19 2025 0–1 0.0% #398 1,565 0 0 2013 1–3 25.0% #145 1,467 0 0
20 — — — — — — — 2014 6–6 50.0% #100 1,552 0 0
21 — — — — — — — 2015 9–22 29.0% #72 1,495 0 0
22 — — — — — — — 2016 13–24 35.1% #85 1,542 0 0
23 — — — — — — — 2017 5–10 33.3% #93 1,618 0 0
24 — — — — — — — 2018 13–12 52.0% #38 1,678 0 0
25 — — — — — — — 2019 21–23 47.7% #42 1,750 0 1
26 — — — — — — — 2020 6–4 60.0% #41 1,768 0 1
27 — — — — — — — 2021 10–17 37.0% #79 1,686 0 1
30 — — — — — — — 2024 1–5 16.7% #692 1,548 0 1
31 — — — — — — — 2025 0–2 0.0% — 1,491 0 1

Surface Results by Age

Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.

Age Sayaka Ishii Saisai Zheng
Yr HardClayGrass Yr HardClayGrass
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
17 — — — — — — — — — — — — — 2011 0 2 2 0.0% — — — — — — — —
18 2024 2 2 4 50.0% — — — — — — — — 2012 2 3 5 40.0% — — — — — — — —
19 2025 0 1 1 0.0% — — — — — — — — 2013 1 3 4 25.0% — — — — — — — —
20 — — — — — — — — — — — — — 2014 6 5 11 54.5% 0 1 1 0.0% — — — —
21 — — — — — — — — — — — — — 2015 8 17 25 32.0% 1 2 3 33.3% 0 3 3 0.0%
22 — — — — — — — — — — — — — 2016 10 17 27 37.0% 0 3 3 0.0% 3 4 7 42.9%
23 — — — — — — — — — — — — — 2017 4 7 11 36.4% 1 2 3 33.3% 0 1 1 0.0%
24 — — — — — — — — — — — — — 2018 12 7 19 63.2% 0 3 3 0.0% 1 2 3 33.3%
25 — — — — — — — — — — — — — 2019 18 16 34 52.9% 3 4 7 42.9% 0 3 3 0.0%
26 — — — — — — — — — — — — — 2020 6 4 10 60.0% — — — — — — — —
27 — — — — — — — — — — — — — 2021 7 13 20 35.0% 3 4 7 42.9% — — — —
30 — — — — — — — — — — — — — 2024 1 4 5 20.0% 0 1 1 0.0% — — — —
31 — — — — — — — — — — — — — 2025 0 2 2 0.0% — — — — — — — —
Career — 2 3 5 40.0% — — — — — — — — — 75 100 175 42.9% 8 20 28 28.6% 4 13 17 23.5%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 4/5 of Sayaka Ishii's and 195/218 of Saisai Zheng's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.

Age Sayaka Ishii Saisai Zheng
Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts% Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts%
17 — —/— — — — — — — — — — 2011 2/2 0.0 0.5 57.0% 46.2% 38.1% 48.6% 17.7% 43.0% 38.5%
18 2024 3/4 0.3 6.0 60.5% 64.4% 47.3% 58.3% 42.9% 57.5% 49.4% 2012 5/5 0.8 1.2 59.6% 59.8% 41.1% 51.6% 46.4% 52.1% 43.1%
19 2025 1/1 0.0 1.0 72.7% 43.8% 33.3% 16.7% 100.0% 40.9% 30.0% 2013 4/4 1.8 3.8 63.2% 56.7% 39.1% 50.4% 42.0% 50.4% 45.6%
20 — —/— — — — — — — — — — 2014 8/12 1.6 1.4 66.9% 56.0% 51.5% 45.6% 52.8% 54.4% 45.8%
21 — —/— — — — — — — — — — 2015 20/31 0.9 2.2 66.6% 52.7% 45.0% 41.5% 52.4% 50.4% 40.2%
22 — —/— — — — — — — — — — 2016 34/37 0.9 2.1 63.7% 56.5% 46.6% 51.9% 45.9% 52.5% 44.2%
23 — —/— — — — — — — — — — 2017 15/15 1.2 2.2 65.3% 54.2% 43.1% 51.6% 58.7% 49.8% 38.9%
24 — —/— — — — — — — — — — 2018 21/25 0.9 2.0 66.8% 58.5% 45.1% 54.0% 49.2% 54.0% 45.2%
25 — —/— — — — — — — — — — 2019 44/44 1.4 2.7 64.7% 59.2% 44.3% 49.7% 45.7% 53.7% 43.6%
26 — —/— — — — — — — — — — 2020 10/10 1.3 2.0 70.3% 62.9% 43.1% 43.5% 45.9% 57.5% 46.4%
27 — —/— — — — — — — — — — 2021 26/27 0.9 1.8 67.3% 58.4% 47.9% 53.1% 43.0% 54.9% 42.5%
30 — —/— — — — — — — — — — 2024 6/6 1.0 3.3 62.2% 51.9% 44.6% 40.1% 45.4% 49.1% 39.6%
Career — 4/5 0.3 4.8 63.6% 59.2% 43.8% 47.9% 57.1% 53.3% 44.6% — 195/220 1.1 2.2 65.4% 57.2% 45.2% 49.6% 47.4% 52.9% 43.1%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.

Age Sayaka Ishii Saisai Zheng
Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule
16 2022 1480 95.5 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
17 2023 1472 99.9 — — — — — — — — — — — — — 2011 1474 95.9 -1.89 -2.23 0.676 41.1% — — — 0.0% -4.25 — — — +0.25
18 2024 1572 119.4 +0.69 +1.59 1.162 53.4% +18 — — 62.5% +1.50 1–1 1–1 — +0.19 2012 1483 99.4 -0.72 -1.45 0.900 48.2% +11 — — 33.3% -1.55 0–1 1–0 — +0.37
19 2025 1566 99.7 +0.48 +0.58 0.508 35.7% — — — 0.0% -4.50 — — — -0.08 2013 1468 100.9 -1.08 +0.55 0.920 48.0% +5 — — 30.0% -1.00 1–1 1–2 (33%) — +0.17
20 2026 1499 94.6 — — — — — — — — — — — — — 2014 1553 119.6 -1.26 +0.86 1.006 49.7% +9 — — 53.3% -0.23 2–4 (33%) 1–1 — -0.37
21 — — — — — — — — — — — — — — — — 2015 1496 110.7 -5.38 -1.24 0.811 45.6% +9 +30 +74 30.9% -1.50 5–3 (63%) 2–1 (67%) 105.2 -0.08
22 — — — — — — — — — — — — — — — — 2016 1542 123.0 -2.10 +1.09 0.930 48.2% +24 -74 +9 40.0% -0.83 0–8 (0%) 2–2 (50%) 91.8 +0.81
23 — — — — — — — — — — — — — — — — 2017 1619 110.1 -3.22 -1.56 0.775 44.5% -8 -100 — 34.2% -1.42 5–3 (63%) 3–1 (75%) 104.9 -0.08
24 — — — — — — — — — — — — — — — — 2018 1679 118.9 -1.21 +1.53 0.983 49.6% +22 -169 -79 54.5% +0.13 3–4 (43%) 0–1 — +1.42
25 — — — — — — — — — — — — — — — — 2019 1750 134.4 -2.18 +0.80 0.942 48.7% -10 -123 -200 48.0% -0.28 8–6 (57%) 11–3 (79%) 107.3 +0.31
26 — — — — — — — — — — — — — — — — 2020 1768 132.2 +0.85 +2.96 1.090 51.7% -8 — — 58.3% +0.58 2–2 (50%) 1–1 — +0.03
27 — — — — — — — — — — — — — — — — 2021 1686 121.1 -1.18 -0.16 0.941 48.6% -18 -68 — 38.7% -0.89 4–4 (50%) 1–1 — -0.36
30 — — — — — — — — — — — — — — — — 2024 1548 93.3 -2.71 -2.47 0.779 44.6% -4 — — 26.7% -1.73 1–2 (33%) 0–1 — +0.51
31 — — — — — — — — — — — — — — — — 2025 1492 101.5 — — — — — — — 0.0% -2.25 — 0–2 — -0.05
Career — 1580 107.6 +0.64 +1.34 0.955 48.9% +18 — — 50.0% +0.30 1–1 1–1 — +2.75 — 1777 123.8 -2.10 +0.33 0.915 48.0% +3 -88 -35 41.7% -0.74 31–38 (45%) 23–16 (59%) 104.4 +1.33

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.