- Born
- 1941-11-21 in nan, Japan
- Hand
- nan
- Backhand
- nan
- Coach
- nan
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Isao Kobayashi
Isao Kobayashi holds a solid career record of 4–3 across 7 matches (57.1%). A winning majority across 7 matches shows consistent ability to get results on Tour.
Best season: 1970 — 4–2 (66.7%) from 6 matches. The best single-season display to date — a useful reference point as the career continues to develop.
| Date | Tournament | Srf | Rd | Wrk | Winner | Lrk | Loser | Score |
|---|---|---|---|---|---|---|---|---|
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - | - | 6-4 6-2 2-6 6-4 | ||
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - | - | 6-2 6-2 6-0 | ||
| 1970-04-10 | Davis Cup WG SF: JPN vs VIE | - | RR | - | - | 6-4 6-4 9-11 6-2 | ||
| 1970-04-10 | Davis Cup WG SF: JPN vs VIE | - | RR | - | - | 6-4 8-6 6-3 | ||
| 1970-03-14 | Davis Cup G2 QF: HKG vs JPN | - | RR | - | - | 6-2 6-3 6-3 | ||
| 1970-03-14 | Davis Cup G2 QF: HKG vs JPN | - | RR | - | - | 6-3 6-2 6-1 | ||
| 1968-12-30 | Hobart | Grass | R64 | - | - | 6-4 6-2 |