H2H data updated: 2026-07-17 14:15 UTC

Mona Guerrant vs Ann Kiyomura Hayashi H2H: 5-3

Mona Guerrant holds a 5–3 lead over Ann Kiyomura Hayashi in their WTA head-to-head. Across 8 main-draw meetings, they are tied 2–2 on carpet, while Mona Guerrant leads 2–0 on grass. Most recently, Ann Kiyomura Hayashi won the 1977 Atlanta third round 6-2 4-6 7-5.

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Mona Guerrant
USA Age 77 Right-Handed
H2H
5 – 3
8 main draw meetings
Ann Kiyomura Hayashi
Age 70 Right-Handed

H2H Match Log

DateTournamentCategoryRoundSurfaceWinnerScoreLoserMatch
Oct 6, 1977* Atlanta WTA 250 R32 Carpet Ann Kiyomura Hayashi 6-2 4-6 7-5 Mona Guerrant Match data
Jun 18, 1976* Eastbourne WTA 250 R16 Grass Mona Guerrant 6-4 7-9 6-2 Ann Kiyomura Hayashi Match data
Mar 31, 1976* Philadelphia WTA 250 R32 Carpet Mona Guerrant 7-6(0) 6-3 Ann Kiyomura Hayashi Match data
Feb 21, 1976* Detroit WTA 250 R16 Carpet Ann Kiyomura Hayashi 6-4 3-6 7-6(0) Mona Guerrant Match data
Oct 10, 1975* Phoenix WTA 250 R16 Hard Ann Kiyomura Hayashi 2-6 6-4 6-4 Mona Guerrant Match data
Sep 20, 1973* Houston WTA 250 R32 Hard Mona Guerrant 6-1 4-6 6-1 Ann Kiyomura Hayashi Match data
Jun 29, 1973* Wimbledon Grand Slam R64 Grass Mona Guerrant 1-6 6-2 6-4 Ann Kiyomura Hayashi Match data
Jan 6, 1973* Portland WTA 250 SF Carpet Mona Guerrant 6-2 6-2 Ann Kiyomura Hayashi Match data

* Estimated match date where the exact historical date is unavailable.

Career Comparison

Player Current Peak Pts Elo W L Win % GS 1000 Finals 500 250 Titles
Mona Guerrant — — — 1,939 123 117 51.2% 0 0 0 0 3 3
Ann Kiyomura Hayashi — — — 1,924 182 200 47.6% 0 0 0 0 2 2

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 Mona Guerrant Ann Kiyomura Hayashi
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
12 — — — — — — — 1968 0–1 0.0% — 1,488 0 0
13 — — — — — — — 1969 0–1 0.0% — 1,473 0 0
14 — — — — — — — 1970 0–1 0.0% — 1,459 0 0
15 — — — — — — — 1971 0–1 0.0% — 1,456 0 0
16 — — — — — — — 1972 5–4 55.6% — 1,515 0 0
17 — — — — — — — 1973 28–30 48.3% — 1,649 0 0
18 — — — — — — — 1974 24–13 64.9% — 1,789 0 0
19 — — — — — — — 1975 7–12 36.8% — 1,770 0 0
20 1969 1–1 50.0% — 1,500 0 0 1976 9–16 36.0% — 1,714 0 0
21 1970 2–3 40.0% — 1,508 0 0 1977 4–8 33.3% — 1,731 0 0
22 1971 3–8 27.3% — 1,521 0 0 1978 10–7 58.8% — 1,803 0 1
23 1972 28–22 56.0% — 1,735 0 1 1979 26–22 54.2% — 1,873 0 1
24 1973 17–19 47.2% — 1,780 0 2 1980 13–20 39.4% — 1,719 0 1
25 1974 12–14 46.2% — 1,767 0 2 1981 23–19 54.8% — 1,853 0 2
26 1975 12–12 50.0% — 1,897 0 2 1982 18–20 47.4% — 1,827 0 2
27 1976 15–14 51.7% — 1,893 0 2 1983 13–20 39.4% — 1,713 0 2
28 1977 14–9 60.9% — 1,886 0 2 1984 2–5 28.6% — 1,684 0 2
29 1978 5–11 31.2% — 1,804 0 2 — — — — — — —
31 1980 14–4 77.8% — 1,809 0 3 — — — — — — —