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

Jeff Borowiak vs Peter Rennert H2H: 2-0

Jeff Borowiak holds a 2–0 lead over Peter Rennert in their ATP head-to-head. Across 2 main-draw meetings, Jeff Borowiak leads 1–0 on grass and 1–0 on hard courts. Most recently, Jeff Borowiak won the 1983 La Quinta round of 64 7-6 6-1.

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Jeff Borowiak
USA Age 76 Right-Handed 193 cm / 6'4"
H2H
2 – 0
2 main draw meetings
Peter Rennert
USA Age 67 Left-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jeff Borowiak #80 7-6 6-1 Peter Rennert Match data Feb 23, 1983* R64 La Quinta ATP 250 Hard
Jeff Borowiak #50 7-6 6-1 Peter Rennert Match data Dec 8, 1982* R32 Australian 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
Jeff Borowiak #920 #20 0 1,958 290 304 48.8% 0 0 0 0 5 5
Peter Rennert #806 #40 0 1,770 49 60 45.0% 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 Jeff Borowiak Peter Rennert
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1968 6–10 37.5% — 1,470 0 0 — — — — — — —
19 1969 3–2 60.0% — 1,511 0 0 — — — — — — —
20 1970 6–7 46.2% — 1,564 0 0 1979 5–6 45.5% #60 1,551 0 0
21 1971 26–20 56.5% — 1,759 0 0 1980 18–16 52.9% #63 1,732 0 0
22 1972 20–28 41.7% — 1,825 0 0 1981 10–14 41.7% #58 1,691 0 0
23 1973 21–33 38.9% #82 1,732 0 0 1982 13–17 43.3% #96 1,641 0 0
24 1974 34–26 56.7% #40 1,858 0 2 1983 3–5 37.5% #115 1,638 0 0
25 1975 31–26 54.4% #48 1,807 0 2 1984 0–2 0.0% #434 1,609 0 0
26 1976 18–23 43.9% #60 1,724 0 2 — — — — — — —
27 1977 47–24 66.2% #25 1,825 0 5 — — — — — — —
28 1978 16–25 39.0% #98 1,671 0 5 — — — — — — —
29 1979 5–13 27.8% #125 1,617 0 5 — — — — — — —
30 1980 5–5 50.0% #189 1,670 0 5 — — — — — — —
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 Peter Rennert
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% — — — — — — — — — — — — — — — — —
19 1969 3 1 4 75.0% 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% 1979 0 2 2 0.0% 1 1 2 50.0% 3 2 5 60.0% 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% 1980 3 5 8 37.5% 3 2 5 60.0% 9 5 14 64.3% 3 4 7 42.9%
22 1972 9 9 18 50.0% 1 5 6 16.7% 0 1 1 0.0% 10 13 23 43.5% 1981 0 4 4 0.0% 0 1 1 0.0% 5 4 9 55.6% 5 5 10 50.0%
23 1973 8 8 16 50.0% 9 12 21 42.9% 1 3 4 25.0% 3 10 13 23.1% 1982 4 5 9 44.4% 2 1 3 66.7% 4 4 8 50.0% 3 7 10 30.0%
24 1974 9 9 18 50.0% 13 11 24 54.2% 2 3 5 40.0% 10 3 13 76.9% 1983 2 3 5 40.0% — — — — 1 1 2 50.0% 0 1 1 0.0%
25 1975 11 9 20 55.0% 8 10 18 44.4% 3 2 5 60.0% 9 5 14 64.3% 1984 — — — — — — — — 0 1 1 0.0% 0 1 1 0.0%
26 1976 3 3 6 50.0% 12 10 22 54.5% 0 2 2 0.0% 3 8 11 27.3% — — — — — — — — — — — — — — — — —
27 1977 7 8 15 46.7% 19 5 24 79.2% 0 2 2 0.0% 21 9 30 70.0% — — — — — — — — — — — — — — — — —
28 1978 1 5 6 16.7% 13 9 22 59.1% 0 3 3 0.0% 2 8 10 20.0% — — — — — — — — — — — — — — — — —
29 1979 0 3 3 0.0% 2 5 7 28.6% 1 1 2 50.0% 2 4 6 33.3% — — — — — — — — — — — — — — — — —
30 1980 3 3 6 50.0% — — — — — — — — 2 2 4 50.0% — — — — — — — — — — — — — — — — —
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% — 9 19 28 32.1% 6 5 11 54.5% 22 17 39 56.4% 12 19 31 38.7%

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 Peter Rennert
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 — — — — — — — — — — — — — — — —
19 1969 1512 107.1 — — — — +167 — — 50.0% +0.43 3–1 (75%) — — +0.31 — — — — — — — — — — — — — — — —
20 1970 1565 109.0 — — — — +89 -54 -66 46.7% -0.47 1–0 0–2 — -0.25 1979 1552 115.8 — — — — -22 — +46 48.3% -0.07 0–1 2–2 (50%) — +1.40
21 1971 1759 131.8 — — — — +6 -154 -148 53.0% +0.15 10–5 (67%) 9–6 (60%) — -1.12 1980 1733 132.0 — — — — -169 -155 +5 52.2% +0.03 5–6 (45%) 10–6 (63%) — +1.48
22 1972 1826 149.5 — — — — +40 -240 — 43.2% -0.46 10–10 (50%) 9–10 (47%) — -7.30 1981 1692 136.3 — — — — -78 — +36 43.5% -0.34 4–6 (40%) 3–6 (33%) — -1.41
23 1973 1733 135.6 — — — — +29 -103 -173 43.0% -0.37 9–15 (38%) 7–10 (41%) — -4.54 1982 1642 129.7 — — — — -51 -72 +74 46.9% -0.23 4–7 (36%) 6–3 (67%) — -0.03
24 1974 1859 146.3 — — — — +25 -114 -273 56.0% +0.23 8–10 (44%) 12–6 (67%) — -4.92 1983 1639 111.9 — — — — -54 — — 37.5% -1.50 2–0 2–1 (67%) — -0.48
25 1975 1808 148.3 — — — — +64 -110 -178 53.6% +0.42 11–12 (48%) 5–9 (36%) — -5.88 1984 1609 102.2 — — — — — — — 0.0% -2.50 — 0–1 — +0.08
26 1976 1725 143.4 — — — — +66 -6 — 47.9% -0.08 9–9 (50%) 6–8 (43%) — -2.54 — — — — — — — — — — — — — — — —
27 1977 1825 151.8 — — — — -12 +75 — 61.0% +0.81 14–7 (67%) 9–9 (50%) — +0.48 — — — — — — — — — — — — — — — —
28 1978 1672 145.7 — — — — -11 +208 -147 43.0% -0.37 3–6 (33%) 4–4 (50%) — -3.12 — — — — — — — — — — — — — — — —
29 1979 1618 131.4 — — — — -19 +166 — 38.3% -0.58 2–5 (29%) 3–6 (33%) — -1.00 — — — — — — — — — — — — — — — —
30 1980 1671 131.2 — — — — -19 — — 59.1% +0.91 1–3 (25%) 1–1 — -0.33 — — — — — — — — — — — — — — — —
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 — 1771 134.1 — — — — -86 -124 +34 46.8% -0.26 15–20 (43%) 23–19 (55%) 102.1 +0.95

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.