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

Riko Sawayanagi vs Katarzyna Piter

Compare the head-to-head record, career totals, season-by-season performance, and match log for Riko Sawayanagi vs Katarzyna Piter.

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Riko Sawayanagi
Japan Age 31 Right-Handed 163 cm / 5'4"
H2H
0 – 0
0 main-draw meetings
Katarzyna Piter
Poland Age 35 Right-Handed 173 cm / 5'8"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Katarzyna Piter #281 6-3 5-5 (ret.) Riko Sawayanagi #234 Match data Sep 18, 2016 Q2 Q Korea Open International → modern equivalent 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
Riko Sawayanagi #1,223 #178 291 1,500 0 0 — 0 0 0 0 0 0
Katarzyna Piter #1,075 #95 648 1,574 8 20 28.6% 0 0 0 0 0 0

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 Riko Sawayanagi Katarzyna Piter
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 2007 0–1 0.0% #676 1,498 0 0
18 — — — — — — — 2009 0–1 0.0% #334 1,491 0 0
19 — — — — — — — 2010 1–1 50.0% #249 1,505 0 0
22 — — — — — — — 2013 3–2 60.0% #119 1,548 0 0
23 — — — — — — — 2014 4–12 25.0% #163 1,472 0 0
25 — — — — — — — 2016 0–1 0.0% #243 1,466 0 0
27 — — — — — — — 2018 0–1 0.0% #290 1,471 0 0
30 — — — — — — — 2021 0–1 0.0% #518 1,421 0 0

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 Riko Sawayanagi Katarzyna Piter
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 — — — — — — — — — — — — — — — — 2007 1498 108.9 +0.50 +4.61 0.712 43.0% — — — 0.0% -2.50 — — — -0.18
18 — — — — — — — — — — — — — — — — 2009 1492 93.6 -2.41 -1.70 0.383 25.7% — — — 0.0% -6.00 — — — -0.06
19 — — — — — — — — — — — — — — — — 2010 1506 101.0 -1.13 -0.93 0.651 40.4% — — — 40.0% -1.60 1–0 1–0 — +0.16
21 2016 1466 96.3 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
22 2017 1450 96.4 — — — — — — — — — — — — — 2013 1548 110.2 -0.66 -1.69 0.971 49.7% +15 — — 53.8% +0.08 2–1 (67%) 1–1 — -0.22
23 — — — — — — — — — — — — — — — — 2014 1473 94.4 -4.47 -3.09 0.761 44.1% +3 +81 — 28.9% -1.76 3–3 (50%) 1–3 (25%) — +0.10
25 — — — — — — — — — — — — — — — — 2016 1467 92.6 -2.75 -6.59 0.717 41.9% — — — 0.0% -3.50 — — — +0.11
26 — — — — — — — — — — — — — — — — 2017 1449 88.2 — — — — — — — — — — — — —
27 — — — — — — — — — — — — — — — — 2018 1471 98.5 -0.69 -1.43 0.588 39.6% — — — 0.0% -3.00 — — — -0.09
28 — — — — — — — — — — — — — — — — 2019 1466 99.7 — — — — — — — — — — — — —
30 — — — — — — — — — — — — — — — — 2021 1421 87.4 +0.59 +3.47 0.783 44.2% — — — 33.3% -1.67 0–1 — — -0.20
31 — — — — — — — — — — — — — — — — 2022 1415 97.0 — — — — — — — — — — — — —
35 — — — — — — — — — — — — — — — — 2026 1403 97.4 — — — — — — — — — — — — —
Career — 1500 96.3 — — — — — — — — — — — — — — 1575 92.7 -2.67 -2.04 0.754 43.9% +8 +81 — 31.3% -1.62 6–5 (55%) 3–4 (43%) 102.2 -1.36

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.