H2H data updated: 2026-07-19 02:51 UTC
John Alexander vs Thomaz Koch H2H: 1-0
John Alexander holds a 1–0 lead over Thomaz Koch in their ATP head-to-head. Across 1 main-draw meeting, John Alexander leads 1–0 on grass. Most recently, John Alexander won the 1977 Nottingham second round 6-2 6-4.
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AUS
Age 75
Right-Handed
190 cm / 6'3"
H2H
1
–
0
1 main draw meetings
BRA
Age 81
Left-Handed
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Jun 8, 1977* | Nottingham | ATP 250 | R64 | Grass | John Alexander | 6-2 6-4 | Thomaz Koch | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| John Alexander | #860 | #8 | 0 | 2,067 | 579 | 422 | 57.8% | 0 | 0 | 0 | 0 | 9 | 9 |
| 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 | John Alexander | Thomaz Koch | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 1968 | 27–14 | 65.9% | — | 1,647 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 1969 | 29–21 | 58.0% | — | 1,641 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1970 | 24–14 | 63.2% | — | 1,819 | 0 | 1 | — | — | — | — | — | — | — |
| 19 | 1971 | 44–36 | 55.0% | — | 1,815 | 0 | 1 | — | — | — | — | — | — | — |
| 20 | 1972 | 36–32 | 52.9% | — | 1,856 | 0 | 1 | — | — | — | — | — | — | — |
| 21 | 1973 | 46–30 | 60.5% | #29 | 1,915 | 0 | 1 | — | — | — | — | — | — | — |
| 22 | 1974 | 38–24 | 61.3% | #26 | 1,839 | 0 | 1 | — | — | — | — | — | — | — |
| 23 | 1975 | 67–24 | 73.6% | #8 | 1,957 | 0 | 3 | 1968 | 29–17 | 63.0% | — | 1,677 | 0 | 1 |
| 24 | 1976 | 19–21 | 47.5% | #47 | 1,851 | 0 | 3 | 1969 | 34–18 | 65.4% | — | 1,799 | 0 | 4 |
| 25 | 1977 | 48–33 | 59.3% | #18 | 1,875 | 0 | 4 | 1970 | 18–15 | 54.5% | — | 1,786 | 0 | 4 |
| 26 | 1978 | 50–31 | 61.7% | #22 | 1,810 | 0 | 4 | 1971 | 24–13 | 64.9% | — | 1,717 | 0 | 5 |
| 27 | 1979 | 43–28 | 60.6% | #20 | 1,815 | 0 | 6 | 1972 | 19–16 | 54.3% | — | 1,717 | 0 | 6 |
| 28 | 1980 | 11–20 | 35.5% | #100 | 1,702 | 0 | 6 | 1973 | 5–6 | 45.5% | #204 | 1,704 | 0 | 6 |
| 29 | 1981 | 23–21 | 52.3% | #75 | 1,746 | 0 | 6 | 1974 | 22–12 | 64.7% | #24 | 1,861 | 0 | 6 |
| 30 | 1982 | 38–21 | 64.4% | #31 | 1,791 | 0 | 8 | 1975 | 20–22 | 47.6% | #62 | 1,743 | 0 | 6 |
| 31 | 1983 | 24–25 | 49.0% | #77 | 1,656 | 0 | 9 | 1976 | 15–8 | 65.2% | #58 | 1,803 | 0 | 6 |
| 32 | 1984 | 12–21 | 36.4% | #142 | 1,564 | 0 | 9 | 1977 | 1–6 | 14.3% | #263 | 1,706 | 0 | 6 |
| 33 | 1985 | 0–6 | 0.0% | #405 | 1,491 | 0 | 9 | — | — | — | — | — | — | — |
| 34 | — | — | — | — | — | — | — | 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 |