H2H data updated: 2026-09-03 00:00 UTC

Jeff Borowiak vs Erick Iskersky H2H: 1-0

Jeff Borowiak holds a 1–0 lead over Erick Iskersky in their ATP head-to-head. Across 1 main-draw meeting, Jeff Borowiak leads 1–0 on clay. Most recently, Jeff Borowiak won the 1979 Swiss Open Gstaad round of 32 6-1 6-1.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Jeff Borowiak
USA Age 76 Right-Handed 193 cm / 6'4"
H2H
1 – 0
1 main draw meetings
Erick Iskersky
USA Age 68 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jeff Borowiak #89 6-1 6-1 Erick Iskersky Match data Jul 12, 1979* R32 Swiss Open Gstaad ATP 250 Clay

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
Erick Iskersky #750 #64 0 1,657 33 61 35.1% 0 0 0 0 1 1

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 Erick Iskersky
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 1978 6–7 46.2% #92 1,551 0 0
21 1971 26–20 56.5% — 1,759 0 0 1979 1–9 10.0% #219 1,479 0 0
22 1972 20–28 41.7% — 1,825 0 0 — — — — — — —
23 1973 21–33 38.9% #82 1,732 0 0 1981 4–5 44.4% — 1,528 0 0
24 1974 34–26 56.7% #40 1,858 0 2 1982 14–23 37.8% #91 1,571 0 1
25 1975 31–26 54.4% #48 1,807 0 2 1983 7–12 36.8% #112 1,570 0 1
26 1976 18–23 43.9% #60 1,724 0 2 1984 1–4 20.0% #290 1,540 0 1
27 1977 47–24 66.2% #25 1,825 0 5 1985 0–1 0.0% #724 1,533 0 1
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 Erick Iskersky
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% 1978 1 1 2 50.0% 5 5 10 50.0% — — — — 0 1 1 0.0%
21 1971 11 10 21 52.4% 6 5 11 54.5% 4 3 7 57.1% 5 2 7 71.4% 1979 0 2 2 0.0% 1 4 5 20.0% 0 1 1 0.0% 0 2 2 0.0%
22 1972 9 9 18 50.0% 1 5 6 16.7% 0 1 1 0.0% 10 13 23 43.5% — — — — — — — — — — — — — — — — —
23 1973 8 8 16 50.0% 9 12 21 42.9% 1 3 4 25.0% 3 10 13 23.1% 1981 0 1 1 0.0% 4 4 8 50.0% — — — — — — — —
24 1974 9 9 18 50.0% 13 11 24 54.2% 2 3 5 40.0% 10 3 13 76.9% 1982 10 11 21 47.6% 3 7 10 30.0% 0 1 1 0.0% 1 4 5 20.0%
25 1975 11 9 20 55.0% 8 10 18 44.4% 3 2 5 60.0% 9 5 14 64.3% 1983 1 8 9 11.1% 3 3 6 50.0% — — — — 3 1 4 75.0%
26 1976 3 3 6 50.0% 12 10 22 54.5% 0 2 2 0.0% 3 8 11 27.3% 1984 1 3 4 25.0% 0 1 1 0.0% — — — — — — — —
27 1977 7 8 15 46.7% 19 5 24 79.2% 0 2 2 0.0% 21 9 30 70.0% 1985 0 1 1 0.0% — — — — — — — — — — — —
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% — 13 27 40 32.5% 16 24 40 40.0% 0 2 2 0.0% 4 8 12 33.3%

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 Erick Iskersky
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 1978 1552 123.1 — — — — +2 +44 — 48.4% -0.52 2–3 (40%) 2–1 (67%) — +0.37
21 1971 1759 131.8 — — — — +6 -154 -148 53.0% +0.15 10–5 (67%) 9–6 (60%) — -1.12 1979 1479 108.2 — — — — +7 +85 — 20.8% -1.83 0–3 (0%) 2–1 (67%) — +0.36
22 1972 1826 149.5 — — — — +40 -240 — 43.2% -0.46 10–10 (50%) 9–10 (47%) — -7.30 — — — — — — — — — — — — — — — —
23 1973 1733 135.6 — — — — +29 -103 -173 43.0% -0.37 9–15 (38%) 7–10 (41%) — -4.54 1981 1528 119.4 — — — — — +56 — 47.6% -0.05 1–2 (33%) — — +0.28
24 1974 1859 146.3 — — — — +25 -114 -273 56.0% +0.23 8–10 (44%) 12–6 (67%) — -4.92 1982 1572 131.2 — — — — -3 +5 — 43.3% -0.74 3–11 (21%) 8–3 (73%) — -0.27
25 1975 1808 148.3 — — — — +64 -110 -178 53.6% +0.42 11–12 (48%) 5–9 (36%) — -5.88 1983 1571 122.0 — — — — -22 +12 — 45.7% -0.44 1–7 (13%) 6–1 (86%) — +0.60
26 1976 1725 143.4 — — — — +66 -6 — 47.9% -0.08 9–9 (50%) 6–8 (43%) — -2.54 1984 1541 104.7 — — — — -2 — — 25.0% -1.42 1–1 0–1 — +0.28
27 1977 1825 151.8 — — — — -12 +75 — 61.0% +0.81 14–7 (67%) 9–9 (50%) — +0.48 1985 1534 104.3 — — — — — — — 33.3% -1.00 0–1 — — -0.06
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 — 1658 128.7 — — — — -7 +37 — 41.4% -0.74 8–28 (22%) 18–7 (72%) 96.6 +1.66

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.