H2H data updated: 2026-07-18 17:48 UTC

Jeff Borowiak vs Thomaz Koch H2H: 2-0

Jeff Borowiak holds a 2–0 lead over Thomaz Koch in their ATP head-to-head. Across 2 main-draw meetings, Jeff Borowiak leads 2–0 on clay. Most recently, Jeff Borowiak won the 1975 St. Louis fourth round 6-4 6-2.

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Jeff Borowiak
USA Age 76 Right-Handed 193 cm / 6'4"
H2H
2 – 0
2 main draw meetings
Thomaz Koch
BRA Age 81 Left-Handed

H2H Match Log

DateTournamentCategoryRoundSurfaceWinnerScoreLoserMatch
Apr 11, 1975* St. Louis ATP 250 R16 Clay Jeff Borowiak #42 6-4 6-2 Thomaz Koch #35 Match data
Jul 24, 1974* Kitzbuhel ATP 250 R32 Clay Jeff Borowiak #42 3-6 6-3 6-2 Thomaz Koch #119 Match data

* Estimated match date where the exact historical date is unavailable.

Career Comparison

Player Current Peak Pts Elo W L Win % GS 1000 Finals 500 250 Titles
Jeff Borowiak #920 #20 0 1,941 289 305 48.7% 0 1 0 0 4 5
Thomaz Koch #857 #24 0 1,873 200 157 56.0% 0 0 0 0 6 6

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 Thomaz Koch
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1968 6–10 37.5% — 1,471 0 0 — — — — — — —
19 1969 3–2 60.0% — 1,512 0 0 — — — — — — —
20 1970 6–7 46.2% — 1,566 0 0 — — — — — — —
21 1971 26–20 56.5% — 1,782 0 0 — — — — — — —
22 1972 20–28 41.7% — 1,828 0 0 — — — — — — —
23 1973 21–33 38.9% #82 1,732 0 0 1968 29–17 63.0% — 1,677 0 1
24 1974 34–27 55.7% #40 1,853 0 2 1969 34–18 65.4% — 1,799 0 4
25 1975 32–27 54.2% #48 1,804 0 2 1970 18–15 54.5% — 1,786 0 4
26 1976 18–23 43.9% #60 1,720 0 2 1971 24–13 64.9% — 1,717 0 5
27 1977 45–23 66.2% #25 1,812 0 5 1972 19–16 54.3% — 1,717 0 6
28 1978 16–25 39.0% #98 1,671 0 5 1973 5–6 45.5% #204 1,704 0 6
29 1979 5–13 27.8% #125 1,614 0 5 1974 22–12 64.7% #24 1,861 0 6
30 1980 5–5 50.0% #189 1,668 0 5 1975 20–22 47.6% #62 1,743 0 6
31 1981 18–19 48.6% #52 1,763 0 5 1976 15–8 65.2% #58 1,803 0 6
32 1982 21–20 51.2% #94 1,740 0 5 1977 1–6 14.3% #263 1,706 0 6
33 1983 13–19 40.6% #98 1,651 0 5 — — — — — — —
34 1984 0–4 0.0% #520 1,598 0 5 1979 4–7 36.4% #85 1,658 0 6
35 — — — — — — — 1980 7–9 43.8% #49 1,651 0 6
36 — — — — — — — 1981 0–2 0.0% #90 1,627 0 6
37 — — — — — — — 1982 1–5 16.7% #240 1,592 0 6
38 — — — — — — — 1983 1–1 50.0% #185 1,583 0 6