H2H data updated: 2026-07-14 14:15 UTC
I. Dupasquier vs D. Siegler H2H: 0-1
D. Siegler leads I. Dupasquier 1–0 in 1 ATP main-draw meeting. D. Siegler's record is 1–0 on hard courts. Their latest meeting was at Basel in 1981, where D. Siegler won 7-6 6-4.
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SUI
Age 64
Right-Handed
H2H
0
–
1
1 main draw meetings
USA
Age 65
Right-Handed
Career Comparison
| Metric | I. Dupasquier | D. Siegler |
|---|---|---|
| Peak Ranking | #122 | #137 |
| Peak Points | 0 | 0 |
| Peak Elo | 1,581 | 1,545 |
| Singles W-L | 15–28 | 15–25 |
| Win % | 34.9% | 37.5% |
| Grand Slam titles | 0 | 0 |
| Masters 1000 titles | 0 | 0 |
| ATP Finals titles | 0 | 0 |
| ATP 500 titles | 0 | 0 |
| ATP 250 titles | 0 | 0 |
| Total titles | 0 | 0 |
| Age | I. Dupasquier | D. Siegler | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | W-L | Win % | Rank | Elo | GS | Titles | Season | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 1978 | 0–1 | 0.0% | #555 | 1,499 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1980 | 0–5 | 0.0% | #309 | 1,459 | 0 | 0 | 1979 | 2–3 | 40.0% | #137 | 1,475 | 0 | 0 |
| 19 | 1981 | 10–9 | 52.6% | — | 1,561 | 0 | 0 | 1980 | 0–3 | 0.0% | #325 | 1,437 | 0 | 0 |
| 20 | 1982 | 5–12 | 29.4% | #122 | 1,495 | 0 | 0 | 1981 | 6–9 | 40.0% | #325 | 1,503 | 0 | 0 |
| 21 | 1983 | 0–1 | 0.0% | #284 | 1,478 | 0 | 0 | 1982 | 5–9 | 35.7% | #147 | 1,513 | 0 | 0 |
| 22 | — | — | — | — | — | — | — | 1983 | 2–1 | 66.7% | #237 | 1,540 | 0 | 0 |
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Oct 15, 1981* | Basel | ATP 250 | R32 | Hard | D. Siegler | 7-6 6-4 | I. Dupasquier | Match data |