H2H data updated: 2026-07-14 14:15 UTC
S. Ball vs Isao Kobayashi H2H: 1-0
S. Ball holds a 1–0 lead over Isao Kobayashi in their ATP head-to-head. Across 1 main-draw meeting, S. Ball leads 1–0 on grass. Most recently, S. Ball won the 1969 Hobart second round 6-4 6-2.
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H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Jan 1, 1969* | Hobart | ATP 250 | R64 | Grass | S. Ball | 6-4 6-2 | Isao Kobayashi | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S. Ball | #748 | #63 | 0 | 1,725 | 126 | 181 | 41.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Isao Kobayashi | — | — | — | 1,500 | — | — | — | 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.
| S. Ball | Isao Kobayashi | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1968 | 1–3 | 25.0% | — | 1,492 | 0 | 0 | — | — | — | — | — | — | — |
| 1969 | 5–5 | 50.0% | — | 1,467 | 0 | 0 | — | — | — | — | — | — | — |
| 1970 | 6–8 | 42.9% | — | 1,460 | 0 | 0 | — | — | — | — | — | — | — |
| 1971 | 8–13 | 38.1% | — | 1,459 | 0 | 0 | — | — | — | — | — | — | — |
| 1972 | 7–9 | 43.8% | — | 1,512 | 0 | 0 | — | — | — | — | — | — | — |
| 1973 | 14–13 | 51.9% | #155 | 1,595 | 0 | 0 | — | — | — | — | — | — | — |
| 1974 | 34–35 | 49.3% | #104 | 1,647 | 0 | 0 | — | — | — | — | — | — | — |
| 1975 | 14–27 | 34.1% | #116 | 1,596 | 0 | 0 | — | — | — | — | — | — | — |
| 1976 | 8–19 | 29.6% | #89 | 1,546 | 0 | 0 | — | — | — | — | — | — | — |
| 1977 | 3–10 | 23.1% | #207 | 1,510 | 0 | 0 | — | — | — | — | — | — | — |
| 1978 | 2–5 | 28.6% | #294 | 1,491 | 0 | 0 | — | — | — | — | — | — | — |
| 1979 | 3–5 | 37.5% | #368 | 1,517 | 0 | 0 | — | — | — | — | — | — | — |
| 1980 | 12–13 | 48.0% | #146 | 1,558 | 0 | 0 | — | — | — | — | — | — | — |
| 1981 | 8–12 | 40.0% | #146 | 1,546 | 0 | 0 | — | — | — | — | — | — | — |
| 1982 | 1–4 | 20.0% | #168 | 1,511 | 0 | 0 | — | — | — | — | — | — | — |