H2H data updated: 2026-07-19 14:15 UTC
Heinz Gunthardt vs John Sadri H2H: 1-0
Heinz Gunthardt holds a 1–0 lead over John Sadri in their ATP head-to-head. Across 1 main-draw meeting, Heinz Gunthardt leads 1–0 on carpet. Most recently, Heinz Gunthardt won the 1980 Rotterdam quarterfinal 7-6 5-7 6-2.
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SUI
Age 67
Right-Handed
180 cm / 5'11"
H2H
1
–
0
1 main draw meetings
USA
Age 69
Right-Handed
188 cm / 6'2"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Mar 15, 1980* | Rotterdam | ATP 250 | QF | Carpet | Heinz Gunthardt | 7-6 5-7 6-2 | John Sadri | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Heinz Gunthardt | #1,013 | #22 | 0 | 1,966 | 225 | 189 | 54.3% | 0 | 0 | 0 | 0 | 5 | 5 |
| John Sadri | #997 | #14 | 0 | 1,976 | 214 | 189 | 53.1% | 0 | 0 | 0 | 0 | 2 | 2 |
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 | Heinz Gunthardt | John Sadri | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | 1976 | 1–4 | 20.0% | #210 | 1,497 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1977 | 3–6 | 33.3% | #221 | 1,509 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 1978 | 25–25 | 50.0% | #55 | 1,764 | 0 | 1 | 1976 | 0–1 | 0.0% | #360 | 1,498 | 0 | 0 |
| 20 | 1979 | 30–23 | 56.6% | #51 | 1,812 | 0 | 1 | 1977 | 0–1 | 0.0% | #414 | 1,496 | 0 | 0 |
| 21 | 1980 | 37–21 | 63.8% | #26 | 1,832 | 0 | 4 | 1978 | 6–8 | 42.9% | #84 | 1,564 | 0 | 0 |
| 22 | 1981 | 28–22 | 56.0% | #38 | 1,813 | 0 | 4 | 1979 | 29–24 | 54.7% | #45 | 1,858 | 0 | 0 |
| 23 | 1982 | 26–25 | 51.0% | #85 | 1,722 | 0 | 4 | 1980 | 47–25 | 65.3% | #15 | 1,938 | 0 | 1 |
| 24 | 1983 | 27–15 | 64.3% | #25 | 1,853 | 0 | 5 | 1981 | 22–21 | 51.2% | #36 | 1,733 | 0 | 1 |
| 25 | 1984 | 23–19 | 54.8% | #31 | 1,779 | 0 | 5 | 1982 | 32–23 | 58.2% | #38 | 1,737 | 0 | 2 |
| 26 | 1985 | 22–19 | 53.7% | #36 | 1,818 | 0 | 5 | 1983 | 8–13 | 38.1% | #93 | 1,640 | 0 | 2 |
| 27 | 1986 | 3–9 | 25.0% | #251 | 1,670 | 0 | 5 | 1984 | 25–16 | 61.0% | #29 | 1,811 | 0 | 2 |
| 28 | 1987 | 0–1 | 0.0% | #954 | 1,663 | 0 | 5 | 1985 | 25–25 | 50.0% | #46 | 1,749 | 0 | 2 |
| 29 | — | — | — | — | — | — | — | 1986 | 12–21 | 36.4% | #130 | 1,648 | 0 | 2 |
| 30 | — | — | — | — | — | — | — | 1987 | 8–11 | 42.1% | #173 | 1,602 | 0 | 2 |