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

Jeff Borowiak vs Geoff Masters H2H: 1-2

Geoff Masters holds a 2–1 lead over Jeff Borowiak in their ATP head-to-head. Across 3 main-draw meetings, Geoff Masters leads 2–0 on hard courts, while Jeff Borowiak leads 1–0 on carpet. Most recently, Jeff Borowiak won the 1975 Sao Paulo Wct round of 32 6-3 6-2.

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Jeff Borowiak
USA Age 76 Right-Handed 193 cm / 6'4"
H2H
1 – 2
3 main draw meetings
Geoff Masters
AUS Age 75 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jeff Borowiak #40 6-3 6-2 Geoff Masters #42 Match data Mar 13, 1975* R32 Sao Paulo Wct ATP 250 Carpet
Geoff Masters 2-6 7-5 6-3 Jeff Borowiak Match data Feb 21, 1975* R16 La Costa Wct ATP 250 Hard
Geoff Masters 6-1 6-2 Jeff Borowiak Match data Feb 7, 1975* R16 St. Petersburg Wct ATP 250 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
Jeff Borowiak #920 #20 0 1,958 290 304 48.8% 0 0 0 0 5 5
Geoff Masters #826 #42 0 1,889 237 253 48.4% 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 Jeff Borowiak Geoff Masters
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1968 2–2 50.0% — 1,511 0 0
18 1968 6–10 37.5% — 1,470 0 0 1969 7–6 53.8% — 1,542 0 0
19 1969 3–2 60.0% — 1,511 0 0 1970 10–7 58.8% — 1,581 0 0
20 1970 6–7 46.2% — 1,564 0 0 1971 19–22 46.3% — 1,573 0 0
21 1971 26–20 56.5% — 1,759 0 0 1972 18–18 50.0% — 1,670 0 0
22 1972 20–28 41.7% — 1,825 0 0 1973 28–23 54.9% #52 1,756 0 0
23 1973 21–33 38.9% #82 1,732 0 0 1974 23–21 52.3% #53 1,766 0 1
24 1974 34–26 56.7% #40 1,858 0 2 1975 27–24 52.9% #44 1,812 0 1
25 1975 31–26 54.4% #48 1,807 0 2 1976 27–31 46.6% #53 1,780 0 2
26 1976 18–23 43.9% #60 1,724 0 2 1977 22–27 44.9% #83 1,662 0 2
27 1977 47–24 66.2% #25 1,825 0 5 1978 20–20 50.0% #59 1,701 0 2
28 1978 16–25 39.0% #98 1,671 0 5 1979 21–23 47.7% #62 1,728 0 2
29 1979 5–13 27.8% #125 1,617 0 5 1980 13–28 31.7% #166 1,517 0 2
30 1980 5–5 50.0% #189 1,670 0 5 1981 0–1 0.0% — 1,501 0 2
31 1981 18–19 48.6% #52 1,763 0 5 — — — — — — —
32 1982 21–20 51.2% #94 1,742 0 5 — — — — — — —
33 1983 13–19 40.6% #98 1,652 0 5 — — — — — — —
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 Geoff Masters
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 %
17 — — — — — — — — — — — — — — — — — 1968 — — — — — — — — 2 2 4 50.0% — — — —
18 1968 4 2 6 66.7% 1 2 3 33.3% 1 5 6 16.7% 0 1 1 0.0% 1969 — — — — 3 3 6 50.0% 4 3 7 57.1% — — — —
19 1969 3 1 4 75.0% 0 1 1 0.0% — — — — — — — — 1970 — — — — 4 3 7 57.1% 6 4 10 60.0% — — — —
20 1970 1 1 2 50.0% 2 3 5 40.0% 3 2 5 60.0% 0 1 1 0.0% 1971 3 9 12 25.0% 5 6 11 45.5% 11 7 18 61.1% — — — —
21 1971 11 10 21 52.4% 6 5 11 54.5% 4 3 7 57.1% 5 2 7 71.4% 1972 11 5 16 68.8% 5 5 10 50.0% 2 7 9 22.2% 0 1 1 0.0%
22 1972 9 9 18 50.0% 1 5 6 16.7% 0 1 1 0.0% 10 13 23 43.5% 1973 8 4 12 66.7% 15 13 28 53.6% 5 6 11 45.5% — — — —
23 1973 8 8 16 50.0% 9 12 21 42.9% 1 3 4 25.0% 3 10 13 23.1% 1974 2 8 10 20.0% 11 5 16 68.8% 9 4 13 69.2% 1 4 5 20.0%
24 1974 9 9 18 50.0% 13 11 24 54.2% 2 3 5 40.0% 10 3 13 76.9% 1975 9 9 18 50.0% 5 6 11 45.5% 6 3 9 66.7% 7 6 13 53.8%
25 1975 11 9 20 55.0% 8 10 18 44.4% 3 2 5 60.0% 9 5 14 64.3% 1976 11 6 17 64.7% 6 9 15 40.0% 3 5 8 37.5% 7 11 18 38.9%
26 1976 3 3 6 50.0% 12 10 22 54.5% 0 2 2 0.0% 3 8 11 27.3% 1977 15 11 26 57.7% 0 2 2 0.0% 5 9 14 35.7% 2 5 7 28.6%
27 1977 7 8 15 46.7% 19 5 24 79.2% 0 2 2 0.0% 21 9 30 70.0% 1978 7 5 12 58.3% 3 2 5 60.0% 4 4 8 50.0% 6 9 15 40.0%
28 1978 1 5 6 16.7% 13 9 22 59.1% 0 3 3 0.0% 2 8 10 20.0% 1979 2 4 6 33.3% 4 3 7 57.1% 9 6 15 60.0% 6 10 16 37.5%
29 1979 0 3 3 0.0% 2 5 7 28.6% 1 1 2 50.0% 2 4 6 33.3% 1980 2 6 8 25.0% 2 7 9 22.2% 1 6 7 14.3% 8 9 17 47.1%
30 1980 3 3 6 50.0% — — — — — — — — 2 2 4 50.0% 1981 — — — — — — — — 0 1 1 0.0% — — — —
31 1981 11 9 20 55.0% 2 3 5 40.0% 3 2 5 60.0% 2 5 7 28.6% — — — — — — — — — — — — — — — — —
32 1982 4 7 11 36.4% 4 3 7 57.1% 10 6 16 62.5% 3 4 7 42.9% — — — — — — — — — — — — — — — — —
33 1983 1 6 7 14.3% 7 5 12 58.3% 2 4 6 33.3% 3 4 7 42.9% — — — — — — — — — — — — — — — — —
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% — 70 67 137 51.1% 63 64 127 49.6% 67 67 134 50.0% 37 55 92 40.2%

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 Geoff Masters
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
17 — — — — — — — — — — — — — — — — 1968 1511 104.2 — — — — — — +30 54.5% +0.45 — — — +0.07
18 1968 1471 97.5 — — — — +106 +20 -42 37.8% -0.84 0–2 — — +0.39 1969 1542 108.7 — — — — — +20 -1 53.1% +0.47 2–1 (67%) — — +1.09
19 1969 1512 107.1 — — — — +167 — — 50.0% +0.43 3–1 (75%) — — +0.31 1970 1581 113.8 — — — — — +4 +1 48.9% +0.09 2–0 0–1 — +2.04
20 1970 1565 109.0 — — — — +89 -54 -66 46.7% -0.47 1–0 0–2 — -0.25 1971 1573 113.6 — — — — -110 +36 +80 44.4% -0.32 9–3 (75%) 1–3 (25%) — +2.45
21 1971 1759 131.8 — — — — +6 -154 -148 53.0% +0.15 10–5 (67%) 9–6 (60%) — -1.12 1972 1670 122.7 — — — — -2 -18 -123 48.0% +0.02 6–6 (50%) 3–4 (43%) — +1.43
22 1972 1826 149.5 — — — — +40 -240 — 43.2% -0.46 10–10 (50%) 9–10 (47%) — -7.30 1973 1756 140.1 — — — — 0 -38 -146 52.2% +0.18 11–7 (61%) 8–9 (47%) — -1.32
23 1973 1733 135.6 — — — — +29 -103 -173 43.0% -0.37 9–15 (38%) 7–10 (41%) — -4.54 1974 1766 141.0 — — — — -125 +49 -11 52.2% +0.31 8–7 (53%) 3–6 (33%) — -2.52
24 1974 1859 146.3 — — — — +25 -114 -273 56.0% +0.23 8–10 (44%) 12–6 (67%) — -4.92 1975 1812 148.9 — — — — -23 -36 +8 53.0% +0.27 10–12 (45%) 6–8 (43%) — -3.09
25 1975 1808 148.3 — — — — +64 -110 -178 53.6% +0.42 11–12 (48%) 5–9 (36%) — -5.88 1976 1781 148.0 — — — — +86 -91 -12 48.5% +0.04 4–8 (33%) 9–4 (69%) — -2.30
26 1976 1725 143.4 — — — — +66 -6 — 47.9% -0.08 9–9 (50%) 6–8 (43%) — -2.54 1977 1662 120.4 — — — — +90 — -42 44.1% -0.40 8–10 (44%) 6–9 (40%) — +2.97
27 1977 1825 151.8 — — — — -12 +75 — 61.0% +0.81 14–7 (67%) 9–9 (50%) — +0.48 1978 1701 140.0 — — — — +47 -24 -35 51.0% +0.09 5–8 (38%) 5–5 (50%) — +1.79
28 1978 1672 145.7 — — — — -11 +208 -147 43.0% -0.37 3–6 (33%) 4–4 (50%) — -3.12 1979 1729 143.8 — — — — -31 -3 -1 48.1% -0.11 8–8 (50%) 8–7 (53%) — -2.12
29 1979 1618 131.4 — — — — -19 +166 — 38.3% -0.58 2–5 (29%) 3–6 (33%) — -1.00 1980 1518 124.9 — — — — +79 +146 +101 36.6% -0.87 4–8 (33%) 8–8 (50%) — -0.05
30 1980 1671 131.2 — — — — -19 — — 59.1% +0.91 1–3 (25%) 1–1 — -0.33 1981 1501 94.8 — — — — — — — 0.0% -4.00 — — — +0.19
31 1981 1764 143.3 — — — — -10 -18 -91 48.9% -0.23 4–5 (44%) 10–10 (50%) — -1.40 — — — — — — — — — — — — — — — —
32 1982 1742 140.8 — — — — -6 -6 -10 53.5% +0.11 4–8 (33%) 9–8 (53%) — -2.10 — — — — — — — — — — — — — — — —
33 1983 1652 129.5 — — — — -39 +97 +56 43.8% -0.57 5–5 (50%) 9–4 (69%) — -1.80 — — — — — — — — — — — — — — — —
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 — 1890 139.6 — — — — +20 -4 -11 48.2% -0.04 77–78 (50%) 57–64 (47%) 99.9 +0.13

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.