H2H data updated: 2026-09-01 00:00 UTC

Sandy Mayer vs Jean Baptiste Chanfreau H2H: 2-1

Sandy Mayer holds a 2–1 lead over Jean Baptiste Chanfreau in their ATP head-to-head. Across 3 main-draw meetings, they are tied 1–1 on grass, while Sandy Mayer leads 1–0 on clay. Most recently, Jean Baptiste Chanfreau won the 1973 Merion round of 16 1-6 6-4 6-4.

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Sandy Mayer
USA Age 74 Right-Handed 178 cm / 5'10"
H2H
2 – 1
3 main draw meetings
Jean Baptiste Chanfreau
FRA Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jean Baptiste Chanfreau 1-6 6-4 6-4 Sandy Mayer Match data Aug 23, 1973* R16 Merion ATP 250 Grass
Sandy Mayer 6-3 8-9 6-1 Jean Baptiste Chanfreau Match data Jul 12, 1973* R32 Swiss Open Gstaad ATP 250 Clay
Sandy Mayer 6-4 6-1 6-3 Jean Baptiste Chanfreau Match data Sep 1, 1972* R128 US Open Grand Slam Grass

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
Sandy Mayer #508 #7 0 2,080 371 205 64.4% 0 0 0 0 12 12
Jean Baptiste Chanfreau #420 #80 0 1,677 61 128 32.3% 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 Sandy Mayer Jean Baptiste Chanfreau
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1970 1–2 33.3% — 1,483 0 0 — — — — — — —
19 1971 1–4 20.0% — 1,455 0 0 — — — — — — —
20 1972 13–8 61.9% — 1,650 0 0 — — — — — — —
21 1973 30–13 69.8% #134 1,813 0 2 1968 3–6 33.3% — 1,460 0 0
22 1974 29–10 74.4% #55 1,875 0 5 1969 4–17 19.0% — 1,380 0 0
23 1975 47–23 67.1% #28 1,939 0 5 1970 5–14 26.3% — 1,461 0 0
24 1976 13–15 46.4% #75 1,877 0 5 1971 15–18 45.5% — 1,557 0 0
25 1977 39–14 73.6% #16 1,995 0 8 1972 6–17 26.1% — 1,465 0 0
26 1978 41–20 67.2% #17 1,936 0 9 1973 20–29 40.8% #84 1,654 0 0
27 1979 15–12 55.6% #44 1,902 0 9 1974 4–16 20.0% #138 1,569 0 0
28 1980 17–18 48.6% #51 1,835 0 9 1975 1–6 14.3% #212 1,510 0 0
29 1981 42–16 72.4% #14 2,048 0 10 — — — — — — —
30 1982 38–19 66.7% #16 1,912 0 11 — — — — — — —
31 1983 33–17 66.0% #18 1,935 0 12 1978 2–3 40.0% #418 1,533 0 0
32 1984 10–11 47.6% #117 1,806 0 12 1979 1–2 33.3% #420 1,523 0 0
33 1985 2–3 40.0% #309 1,795 0 12 — — — — — — —

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 Sandy Mayer Jean Baptiste Chanfreau
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 %
18 1970 — — — — — — — — 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
19 1971 0 1 1 0.0% 1 2 3 33.3% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
20 1972 1 1 2 50.0% 6 4 10 60.0% 5 2 7 71.4% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
21 1973 14 6 20 70.0% 7 2 9 77.8% 8 4 12 66.7% 1 1 2 50.0% 1968 — — — — 2 5 7 28.6% 1 1 2 50.0% — — — —
22 1974 6 2 8 75.0% — — — — 5 3 8 62.5% 18 5 23 78.3% 1969 0 1 1 0.0% 1 7 8 12.5% 3 8 11 27.3% 0 1 1 0.0%
23 1975 17 7 24 70.8% 6 7 13 46.2% 3 2 5 60.0% 21 7 28 75.0% 1970 1 2 3 33.3% 2 7 9 22.2% 1 4 5 20.0% 1 1 2 50.0%
24 1976 4 4 8 50.0% — — — — 1 3 4 25.0% 8 8 16 50.0% 1971 5 5 10 50.0% 3 7 10 30.0% 7 6 13 53.8% — — — —
25 1977 15 5 20 75.0% — — — — 3 1 4 75.0% 21 8 29 72.4% 1972 2 3 5 40.0% 2 9 11 18.2% 1 4 5 20.0% 1 1 2 50.0%
26 1978 4 4 8 50.0% 3 1 4 75.0% 8 2 10 80.0% 26 13 39 66.7% 1973 4 6 10 40.0% 6 10 16 37.5% 6 3 9 66.7% 4 10 14 28.6%
27 1979 2 3 5 40.0% 4 4 8 50.0% 6 2 8 75.0% 3 3 6 50.0% 1974 0 4 4 0.0% 1 3 4 25.0% 2 3 5 40.0% 1 6 7 14.3%
28 1980 9 6 15 60.0% 0 2 2 0.0% 7 6 13 53.8% 1 4 5 20.0% 1975 — — — — 1 6 7 14.3% — — — — — — — —
29 1981 22 8 30 73.3% 2 1 3 66.7% 3 1 4 75.0% 15 6 21 71.4% — — — — — — — — — — — — — — — — —
30 1982 10 5 15 66.7% 10 3 13 76.9% 3 2 5 60.0% 15 9 24 62.5% — — — — — — — — — — — — — — — — —
31 1983 16 8 24 66.7% 6 1 7 85.7% 4 1 5 80.0% 7 7 14 50.0% 1978 — — — — 1 1 2 50.0% — — — — 1 2 3 33.3%
32 1984 9 6 15 60.0% 1 3 4 25.0% 0 1 1 0.0% 0 1 1 0.0% 1979 1 2 3 33.3% — — — — — — — — — — — —
33 1985 — — — — 0 1 1 0.0% — — — — 2 2 4 50.0% — — — — — — — — — — — — — — — — —
Career — 129 66 195 66.2% 46 31 77 59.7% 57 33 90 63.3% 139 75 214 65.0% — 13 23 36 36.1% 19 55 74 25.7% 21 29 50 42.0% 8 21 29 27.6%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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 Sandy Mayer Jean Baptiste Chanfreau
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
18 1970 1484 98.5 — — — — — — +6 37.5% -0.87 0–1 1–2 (33%) — +0.18 — — — — — — — — — — — — — — — —
19 1971 1456 95.6 — — — — — +66 — 30.8% -2.46 0–1 1–0 — +0.38 — — — — — — — — — — — — — — — —
20 1972 1651 127.7 — — — — -77 -36 -10 61.3% +0.85 5–4 (56%) 2–3 (40%) — +1.83 — — — — — — — — — — — — — — — —
21 1973 1813 130.2 — — — — -73 -58 -95 69.2% +1.07 6–3 (67%) 8–2 (80%) — +3.28 1968 1461 96.0 — — — — — -19 — 23.8% -1.76 2–1 (67%) — — +0.04
22 1974 1875 138.1 — — — — +51 — -128 68.5% +1.21 10–3 (77%) 6–3 (67%) — +3.00 1969 1380 97.4 — — — — — -3 +66 24.5% -1.68 1–3 (25%) 1–0 — +0.29
23 1975 1939 149.0 — — — — +83 -226 -171 63.9% +1.01 8–7 (53%) 10–7 (59%) — -0.37 1970 1462 121.0 — — — — +124 -60 -15 26.9% -1.56 3–1 (75%) 2–3 (40%) — -1.06
24 1976 1877 146.9 — — — — +59 — -136 49.2% -0.11 2–6 (25%) 4–5 (44%) — -4.01 1971 1558 113.9 — — — — +33 -115 +7 44.6% -0.42 5–6 (45%) 5–7 (42%) — +2.80
25 1977 1996 152.6 — — — — +51 — -241 68.9% +1.40 9–8 (53%) 4–3 (57%) — +0.23 1972 1466 100.7 — — — — +111 -77 +36 29.3% -1.22 2–6 (25%) 4–7 (36%) — +1.13
26 1978 1936 156.1 — — — — +10 -230 -32 63.8% +0.98 12–11 (52%) 14–10 (58%) — -2.55 1973 1655 135.3 — — — — +21 -194 -82 42.9% -0.71 8–11 (42%) 4–6 (40%) — -2.60
27 1979 1902 143.7 — — — — -28 -144 +61 53.4% +0.10 7–4 (64%) 10–5 (67%) — -3.21 1974 1570 119.2 — — — — -24 -100 +33 24.0% -1.90 2–2 (50%) 1–1 — -0.94
28 1980 1835 151.0 — — — — +59 — +50 48.2% -0.05 4–4 (50%) 6–4 (60%) — -4.38 1975 1510 97.2 — — — — — -78 — 14.3% -2.43 — — — +0.60
29 1981 2049 165.1 — — — — +73 -302 -159 65.4% +1.15 13–4 (76%) 10–4 (71%) — -5.49 — — — — — — — — — — — — — — — —
30 1982 1912 154.4 — — — — +102 -109 -72 63.2% +0.94 13–6 (68%) 8–6 (57%) — -1.06 — — — — — — — — — — — — — — — —
31 1983 1936 155.1 — — — — +1 -53 -12 61.2% +0.81 14–8 (64%) 10–8 (56%) — -2.69 1978 1533 111.0 — — — — +24 — — 38.5% -1.08 2–1 (67%) 1–3 (25%) — +0.07
32 1984 1806 122.4 — — — — +46 +18 — 51.7% -0.05 5–6 (45%) 5–3 (63%) — -0.21 1979 1524 96.5 — — — — +11 — — 28.6% -1.86 1–0 — — +0.43
33 1985 1795 128.2 — — — — +51 — — 50.0% +0.50 0–2 0–2 — -1.00 — — — — — — — — — — — — — — — —
Career — 2081 155.8 — — — — +44 -112 -55 61.6% +0.79 108–78 (58%) 99–67 (60%) 107.5 -2.83 — 1677 118.7 — — — — +33 -94 +7 33.8% -1.16 26–31 (46%) 18–27 (40%) 103.4 +0.40

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.