H2H data updated: 2026-09-02 00:00 UTC

Jeff Borowiak vs Sandy Mayer H2H: 1-1

Jeff Borowiak and Sandy Mayer are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, they are tied 1–1 on carpet. Most recently, Sandy Mayer won the 1982 San Francisco round of 16 7-5 4-6 7-6.

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Jeff Borowiak
USA Age 76 Right-Handed 193 cm / 6'4"
H2H
1 – 1
2 main draw meetings
Sandy Mayer
USA Age 74 Right-Handed 178 cm / 5'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Sandy Mayer #12 7-5 4-6 7-6 Jeff Borowiak #68 Match data Sep 24, 1982* R16 San Francisco ATP 250 Carpet
Jeff Borowiak 4-6 6-4 6-4 Sandy Mayer Match data Apr 1, 1977* R16 Los Angeles Open ATP 250 Carpet

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
Jeff Borowiak #920 #20 0 1,958 290 304 48.8% 0 0 0 0 5 5
Sandy Mayer #508 #7 0 2,080 371 205 64.4% 0 0 0 0 12 12

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 Jeff Borowiak Sandy Mayer
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1968 6–10 37.5% — 1,470 0 0 1970 1–2 33.3% — 1,483 0 0
19 1969 3–2 60.0% — 1,511 0 0 1971 1–4 20.0% — 1,455 0 0
20 1970 6–7 46.2% — 1,564 0 0 1972 13–8 61.9% — 1,650 0 0
21 1971 26–20 56.5% — 1,759 0 0 1973 30–13 69.8% #134 1,813 0 2
22 1972 20–28 41.7% — 1,825 0 0 1974 29–10 74.4% #55 1,875 0 5
23 1973 21–33 38.9% #82 1,732 0 0 1975 47–23 67.1% #28 1,939 0 5
24 1974 34–26 56.7% #40 1,858 0 2 1976 13–15 46.4% #75 1,877 0 5
25 1975 31–26 54.4% #48 1,807 0 2 1977 39–14 73.6% #16 1,995 0 8
26 1976 18–23 43.9% #60 1,724 0 2 1978 41–20 67.2% #17 1,936 0 9
27 1977 47–24 66.2% #25 1,825 0 5 1979 15–12 55.6% #44 1,902 0 9
28 1978 16–25 39.0% #98 1,671 0 5 1980 17–18 48.6% #51 1,835 0 9
29 1979 5–13 27.8% #125 1,617 0 5 1981 42–16 72.4% #14 2,048 0 10
30 1980 5–5 50.0% #189 1,670 0 5 1982 38–19 66.7% #16 1,912 0 11
31 1981 18–19 48.6% #52 1,763 0 5 1983 33–17 66.0% #18 1,935 0 12
32 1982 21–20 51.2% #94 1,742 0 5 1984 10–11 47.6% #117 1,806 0 12
33 1983 13–19 40.6% #98 1,652 0 5 1985 2–3 40.0% #309 1,795 0 12
34 1984 0–4 0.0% #520 1,599 0 5 — — — — — — —

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 Jeff Borowiak Sandy Mayer
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 1968 4 2 6 66.7% 1 2 3 33.3% 1 5 6 16.7% 0 1 1 0.0% 1970 — — — — — — — — 1 2 3 33.3% — — — —
19 1969 3 1 4 75.0% 0 1 1 0.0% — — — — — — — — 1971 0 1 1 0.0% 1 2 3 33.3% 0 1 1 0.0% — — — —
20 1970 1 1 2 50.0% 2 3 5 40.0% 3 2 5 60.0% 0 1 1 0.0% 1972 1 1 2 50.0% 6 4 10 60.0% 5 2 7 71.4% 1 1 2 50.0%
21 1971 11 10 21 52.4% 6 5 11 54.5% 4 3 7 57.1% 5 2 7 71.4% 1973 14 6 20 70.0% 7 2 9 77.8% 8 4 12 66.7% 1 1 2 50.0%
22 1972 9 9 18 50.0% 1 5 6 16.7% 0 1 1 0.0% 10 13 23 43.5% 1974 6 2 8 75.0% — — — — 5 3 8 62.5% 18 5 23 78.3%
23 1973 8 8 16 50.0% 9 12 21 42.9% 1 3 4 25.0% 3 10 13 23.1% 1975 17 7 24 70.8% 6 7 13 46.2% 3 2 5 60.0% 21 7 28 75.0%
24 1974 9 9 18 50.0% 13 11 24 54.2% 2 3 5 40.0% 10 3 13 76.9% 1976 4 4 8 50.0% — — — — 1 3 4 25.0% 8 8 16 50.0%
25 1975 11 9 20 55.0% 8 10 18 44.4% 3 2 5 60.0% 9 5 14 64.3% 1977 15 5 20 75.0% — — — — 3 1 4 75.0% 21 8 29 72.4%
26 1976 3 3 6 50.0% 12 10 22 54.5% 0 2 2 0.0% 3 8 11 27.3% 1978 4 4 8 50.0% 3 1 4 75.0% 8 2 10 80.0% 26 13 39 66.7%
27 1977 7 8 15 46.7% 19 5 24 79.2% 0 2 2 0.0% 21 9 30 70.0% 1979 2 3 5 40.0% 4 4 8 50.0% 6 2 8 75.0% 3 3 6 50.0%
28 1978 1 5 6 16.7% 13 9 22 59.1% 0 3 3 0.0% 2 8 10 20.0% 1980 9 6 15 60.0% 0 2 2 0.0% 7 6 13 53.8% 1 4 5 20.0%
29 1979 0 3 3 0.0% 2 5 7 28.6% 1 1 2 50.0% 2 4 6 33.3% 1981 22 8 30 73.3% 2 1 3 66.7% 3 1 4 75.0% 15 6 21 71.4%
30 1980 3 3 6 50.0% — — — — — — — — 2 2 4 50.0% 1982 10 5 15 66.7% 10 3 13 76.9% 3 2 5 60.0% 15 9 24 62.5%
31 1981 11 9 20 55.0% 2 3 5 40.0% 3 2 5 60.0% 2 5 7 28.6% 1983 16 8 24 66.7% 6 1 7 85.7% 4 1 5 80.0% 7 7 14 50.0%
32 1982 4 7 11 36.4% 4 3 7 57.1% 10 6 16 62.5% 3 4 7 42.9% 1984 9 6 15 60.0% 1 3 4 25.0% 0 1 1 0.0% 0 1 1 0.0%
33 1983 1 6 7 14.3% 7 5 12 58.3% 2 4 6 33.3% 3 4 7 42.9% 1985 — — — — 0 1 1 0.0% — — — — 2 2 4 50.0%
34 1984 0 1 1 0.0% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 86 94 180 47.8% 99 91 190 52.1% 30 40 70 42.9% 75 79 154 48.7% — 129 66 195 66.2% 46 31 77 59.7% 57 33 90 63.3% 139 75 214 65.0%

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 Jeff Borowiak Sandy Mayer
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 1968 1471 97.5 — — — — +106 +20 -42 37.8% -0.84 0–2 — — +0.39 1970 1484 98.5 — — — — — — +6 37.5% -0.87 0–1 1–2 (33%) — +0.18
19 1969 1512 107.1 — — — — +167 — — 50.0% +0.43 3–1 (75%) — — +0.31 1971 1456 95.6 — — — — — +66 — 30.8% -2.46 0–1 1–0 — +0.38
20 1970 1565 109.0 — — — — +89 -54 -66 46.7% -0.47 1–0 0–2 — -0.25 1972 1651 127.7 — — — — -77 -36 -10 61.3% +0.85 5–4 (56%) 2–3 (40%) — +1.83
21 1971 1759 131.8 — — — — +6 -154 -148 53.0% +0.15 10–5 (67%) 9–6 (60%) — -1.12 1973 1813 130.2 — — — — -73 -58 -95 69.2% +1.07 6–3 (67%) 8–2 (80%) — +3.28
22 1972 1826 149.5 — — — — +40 -240 — 43.2% -0.46 10–10 (50%) 9–10 (47%) — -7.30 1974 1875 138.1 — — — — +51 — -128 68.5% +1.21 10–3 (77%) 6–3 (67%) — +3.00
23 1973 1733 135.6 — — — — +29 -103 -173 43.0% -0.37 9–15 (38%) 7–10 (41%) — -4.54 1975 1939 149.0 — — — — +83 -226 -171 63.9% +1.01 8–7 (53%) 10–7 (59%) — -0.37
24 1974 1859 146.3 — — — — +25 -114 -273 56.0% +0.23 8–10 (44%) 12–6 (67%) — -4.92 1976 1877 146.9 — — — — +59 — -136 49.2% -0.11 2–6 (25%) 4–5 (44%) — -4.01
25 1975 1808 148.3 — — — — +64 -110 -178 53.6% +0.42 11–12 (48%) 5–9 (36%) — -5.88 1977 1996 152.6 — — — — +51 — -241 68.9% +1.40 9–8 (53%) 4–3 (57%) — +0.23
26 1976 1725 143.4 — — — — +66 -6 — 47.9% -0.08 9–9 (50%) 6–8 (43%) — -2.54 1978 1936 156.1 — — — — +10 -230 -32 63.8% +0.98 12–11 (52%) 14–10 (58%) — -2.55
27 1977 1825 151.8 — — — — -12 +75 — 61.0% +0.81 14–7 (67%) 9–9 (50%) — +0.48 1979 1902 143.7 — — — — -28 -144 +61 53.4% +0.10 7–4 (64%) 10–5 (67%) — -3.21
28 1978 1672 145.7 — — — — -11 +208 -147 43.0% -0.37 3–6 (33%) 4–4 (50%) — -3.12 1980 1835 151.0 — — — — +59 — +50 48.2% -0.05 4–4 (50%) 6–4 (60%) — -4.38
29 1979 1618 131.4 — — — — -19 +166 — 38.3% -0.58 2–5 (29%) 3–6 (33%) — -1.00 1981 2049 165.1 — — — — +73 -302 -159 65.4% +1.15 13–4 (76%) 10–4 (71%) — -5.49
30 1980 1671 131.2 — — — — -19 — — 59.1% +0.91 1–3 (25%) 1–1 — -0.33 1982 1912 154.4 — — — — +102 -109 -72 63.2% +0.94 13–6 (68%) 8–6 (57%) — -1.06
31 1981 1764 143.3 — — — — -10 -18 -91 48.9% -0.23 4–5 (44%) 10–10 (50%) — -1.40 1983 1936 155.1 — — — — +1 -53 -12 61.2% +0.81 14–8 (64%) 10–8 (56%) — -2.69
32 1982 1742 140.8 — — — — -6 -6 -10 53.5% +0.11 4–8 (33%) 9–8 (53%) — -2.10 1984 1806 122.4 — — — — +46 +18 — 51.7% -0.05 5–6 (45%) 5–3 (63%) — -0.21
33 1983 1652 129.5 — — — — -39 +97 +56 43.8% -0.57 5–5 (50%) 9–4 (69%) — -1.80 1985 1795 128.2 — — — — +51 — — 50.0% +0.50 0–2 0–2 — -1.00
34 1984 1599 108.8 — — — — — — — 20.0% -1.60 0–2 0–1 — -0.33 — — — — — — — — — — — — — — — —
Career — 1959 147.5 — — — — +19 -10 -85 49.6% -0.02 94–105 (47%) 93–94 (50%) 100.6 -6.02 — 2081 155.8 — — — — +44 -112 -55 61.6% +0.79 108–78 (58%) 99–67 (60%) 107.5 -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.