H2H data updated: 2026-07-18 17:48 UTC
Thomaz Koch vs Jan Kallquist H2H: 1-0
Thomaz Koch holds a 1–0 lead over Jan Kallquist in their ATP head-to-head. Across 1 main-draw meeting, Thomaz Koch leads 1–0 on clay. Most recently, Thomaz Koch won the 1975 Bastad third round 6-4 6-3.
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H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Jul 10, 1975* | Bastad | ATP 250 | R32 | Clay | Thomaz Koch | 6-4 6-3 | Jan Kallquist | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thomaz Koch | #857 | #24 | 0 | 1,873 | 200 | 157 | 56.0% | 0 | 0 | 0 | 0 | 6 | 6 |
| Jan Kallquist | #743 | #177 | 0 | 1,500 | 0 | 13 | 0.0% | 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.
| Thomaz Koch | Jan Kallquist | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1968 | 29–17 | 63.0% | — | 1,677 | 0 | 1 | 1974 | 0–1 | 0.0% | #318 | 1,485 | 0 | 0 |
| 1969 | 34–18 | 65.4% | — | 1,799 | 0 | 4 | 1975 | 0–2 | 0.0% | #264 | 1,478 | 0 | 0 |
| 1970 | 18–15 | 54.5% | — | 1,786 | 0 | 4 | 1976 | 0–1 | 0.0% | #360 | 1,466 | 0 | 0 |
| 1971 | 24–13 | 64.9% | — | 1,717 | 0 | 5 | 1977 | 0–2 | 0.0% | #294 | 1,433 | 0 | 0 |
| 1972 | 19–16 | 54.3% | — | 1,717 | 0 | 6 | 1978 | 0–2 | 0.0% | #465 | 1,428 | 0 | 0 |
| 1973 | 5–6 | 45.5% | #204 | 1,704 | 0 | 6 | 1979 | 0–2 | 0.0% | #177 | 1,424 | 0 | 0 |
| 1974 | 22–12 | 64.7% | #24 | 1,861 | 0 | 6 | 1980 | 0–2 | 0.0% | #365 | 1,399 | 0 | 0 |
| 1975 | 20–22 | 47.6% | #62 | 1,743 | 0 | 6 | 1982 | 0–1 | 0.0% | — | 1,395 | 0 | 0 |
| 1976 | 15–8 | 65.2% | #58 | 1,803 | 0 | 6 | — | — | — | — | — | — | — |
| 1977 | 1–6 | 14.3% | #263 | 1,706 | 0 | 6 | — | — | — | — | — | — | — |
| 1979 | 4–7 | 36.4% | #85 | 1,658 | 0 | 6 | — | — | — | — | — | — | — |
| 1980 | 7–9 | 43.8% | #49 | 1,651 | 0 | 6 | — | — | — | — | — | — | — |
| 1981 | 0–2 | 0.0% | #90 | 1,627 | 0 | 6 | — | — | — | — | — | — | — |
| 1982 | 1–5 | 16.7% | #240 | 1,592 | 0 | 6 | — | — | — | — | — | — | — |
| 1983 | 1–1 | 50.0% | #185 | 1,583 | 0 | 6 | — | — | — | — | — | — | — |