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

Mariana Diaz-Oliva vs Rika Hiraki H2H: 0-1

Rika Hiraki holds a 1–0 lead over Mariana Diaz-Oliva in their WTA head-to-head. Across 1 main-draw meeting, Rika Hiraki leads 1–0 on hard courts. Most recently, Rika Hiraki won the 1997 US Open round of 128 6-4 4-6 6-2.

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Mariana Diaz-Oliva
ARG Age 50 Right-Handed 172 cm / 5'8"
H2H
0 – 1
1 main-draw meetings
Rika Hiraki
JPN Age 54 Right-Handed 157 cm / 5'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Rika Hiraki #105 6-4 4-6 6-2 Mariana Diaz-Oliva #93 Match data Aug 27, 1997* R128 US Open Grand Slam Hard

Estimated match date where the exact historical date is unavailable. 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
Mariana Diaz-Oliva #452 #42 696 1,652 86 130 39.8% 0 0 0 0 1 1
Rika Hiraki #965 #72 325 1,589 48 93 34.0% 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 Mariana Diaz-Oliva Rika Hiraki
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1988 0–2 0.0% #305 1,477 0 0
18 — — — — — — — 1990 0–2 0.0% #248 1,451 0 0
19 — — — — — — — 1991 8–8 50.0% #105 1,544 0 0
20 1996 0–1 0.0% #140 1,485 0 0 1992 8–15 34.8% #122 1,570 0 0
21 1997 2–7 22.2% #106 1,455 0 0 1993 8–18 30.8% #134 1,550 0 0
22 1998 6–9 40.0% #95 1,470 0 0 1994 2–8 20.0% #187 1,503 0 0
23 1999 9–11 45.0% #107 1,510 0 0 1995 4–7 36.4% #152 1,524 0 0
24 2000 4–8 33.3% #112 1,499 0 0 1996 6–12 33.3% #103 1,510 0 0
25 2001 18–22 45.0% #55 1,548 0 0 1997 9–16 36.0% #93 1,485 0 0
26 2002 11–15 42.3% #89 1,567 0 1 1998 3–4 42.9% #168 1,501 0 0
27 2003 4–4 50.0% #172 1,581 0 1 — — — — — — —
28 2004 5–10 33.3% #102 1,539 0 1 — — — — — — —
29 2005 22–23 48.9% #58 1,606 0 1 2001 0–1 0.0% #339 1,497 0 0
30 2006 5–20 20.0% #192 1,460 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 Mariana Diaz-Oliva Rika Hiraki
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
16 — — — — — — — — — — — — — — — — — 1988 — — — — — — — — — — — — 0 2 2 0.0%
18 — — — — — — — — — — — — — — — — — 1990 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
19 — — — — — — — — — — — — — — — — — 1991 8 6 14 57.1% 0 1 1 0.0% 0 1 1 0.0% — — — —
20 1996 — — — — 0 1 1 0.0% — — — — — — — — 1992 4 10 14 28.6% 0 1 1 0.0% 2 1 3 66.7% 2 3 5 40.0%
21 1997 0 1 1 0.0% 2 5 7 28.6% 0 1 1 0.0% — — — — 1993 4 10 14 28.6% 0 1 1 0.0% 0 2 2 0.0% 4 5 9 44.4%
22 1998 0 3 3 0.0% 5 5 10 50.0% 1 1 2 50.0% — — — — 1994 2 6 8 25.0% — — — — — — — — 0 2 2 0.0%
23 1999 0 1 1 0.0% 8 9 17 47.1% 1 1 2 50.0% — — — — 1995 1 4 5 20.0% — — — — 1 1 2 50.0% 2 2 4 50.0%
24 2000 1 2 3 33.3% 3 6 9 33.3% — — — — — — — — 1996 5 8 13 38.5% 0 1 1 0.0% 1 2 3 33.3% 0 1 1 0.0%
25 2001 4 8 12 33.3% 14 12 26 53.8% 0 2 2 0.0% — — — — 1997 9 10 19 47.4% 0 2 2 0.0% 0 2 2 0.0% 0 2 2 0.0%
26 2002 4 7 11 36.4% 7 7 14 50.0% 0 1 1 0.0% — — — — 1998 3 4 7 42.9% — — — — — — — — — — — —
27 2003 0 2 2 0.0% 4 2 6 66.7% — — — — — — — — — — — — — — — — — — — — — — — — —
28 2004 4 7 11 36.4% 1 3 4 25.0% — — — — — — — — — — — — — — — — — — — — — — — — —
29 2005 8 11 19 42.1% 12 10 22 54.5% 2 2 4 50.0% — — — — 2001 — — — — 0 1 1 0.0% — — — — — — — —
30 2006 3 10 13 23.1% 2 8 10 20.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 24 52 76 31.6% 58 68 126 46.0% 4 10 14 28.6% — — — — — 36 59 95 37.9% 0 7 7 0.0% 4 9 13 30.8% 8 18 26 30.8%

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 Mariana Diaz-Oliva Rika Hiraki
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 — — — — — — — — — — — — — — — — 1988 1477 92.5 — — — — — — — 0.0% -4.25 — 0–1 — +0.24
18 — — — — — — — — — — — — — — — — 1990 1451 94.5 — — — — — — — 0.0% -3.25 — 0–1 — +0.44
19 — — — — — — — — — — — — — — — — 1991 1545 126.7 — — — — +44 — — 48.6% 0.00 3–2 (60%) 1–4 (20%) 99.8 +0.95
20 1996 1486 100.0 — — — — — — — 33.3% -0.67 0–1 — — +0.07 1992 1571 120.5 — — — — -4 — +15 34.6% -0.92 4–2 (67%) 1–3 (25%) 102.2 +0.83
21 1997 1456 102.2 — — — — — +55 — 25.0% -1.38 0–2 0–2 — +0.10 1993 1550 120.0 — — — — +13 — — 32.1% -1.05 2–2 (50%) 2–4 (33%) 98.9 -0.09
22 1998 1471 104.3 — — — — +8 +58 — 43.3% -0.47 1–1 3–3 (50%) — +1.39 1994 1503 101.3 — — — — +8 — — 20.0% -2.50 0–2 — — -0.29
23 1999 1511 99.1 — — — — — +15 — 41.3% -0.44 5–1 (83%) 3–2 (60%) 105.7 +1.34 1995 1525 113.7 — — — — -16 — — 41.7% -0.96 0–2 1–0 — -0.64
24 2000 1500 102.9 — — — — -35 +12 — 33.3% -0.89 2–3 (40%) 3–4 (43%) 98.0 +0.33 1996 1511 111.5 — — — — +3 — +70 36.8% -1.05 2–2 (50%) 1–1 — +0.55
25 2001 1548 115.4 — — — — -74 +72 — 42.7% -0.76 7–4 (64%) 4–1 (80%) 108.0 -0.32 1997 1485 109.9 — — — — +51 — — 41.2% -0.62 8–10 (44%) 1–4 (20%) 98.1 +1.58
26 2002 1568 108.2 — — — — -86 +51 — 46.4% -0.36 2–4 (33%) 1–4 (20%) 95.3 -0.04 1998 1501 113.1 — — — — +42 — — 50.0% -0.25 0–2 1–0 — +0.59
27 2003 1581 107.7 — — — — — +98 — 37.5% -0.06 2–0 1–2 (33%) — +0.45 — — — — — — — — — — — — — — — —
28 2004 1540 108.8 -1.83 -0.74 0.856 46.7% -69 +94 — 32.4% -1.12 3–1 (75%) 2–2 (50%) 102.8 -0.24 — — — — — — — — — — — — — — — —
29 2005 1606 122.7 -1.27 +1.04 0.989 50.0% -69 +54 -120 48.4% -0.26 7–4 (64%) 6–6 (50%) 106.4 -0.48 2001 1497 97.7 — — — — — — — 0.0% -4.50 — — — -0.17
30 2006 1460 104.0 -4.32 -0.65 0.866 46.5% +14 +88 — 28.8% -1.46 2–9 (18%) 2–5 (29%) 90.3 0.00 — — — — — — — — — — — — — — — —
Career — 1653 112.9 -3.15 -0.20 0.897 47.5% -53 +56 -120 40.3% -0.68 31–30 (51%) 25–31 (45%) 100.1 +1.21 — 1589 119.5 — — — — +19 — +43 36.8% -0.95 19–24 (44%) 8–18 (31%) 94.7 +2.83

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.