Isao Kobayashi
W-L: 4-2 (66.67%)
Matches in 1970
| Date ▼ | Tourney | Surface | Round | Wrk | Winner | Lrk | Loser | Score | H2H | BoF | Min | WA | WDF | W1stIn | W1st% | W2nd% | BPSvd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1970-03-14 | Davis Cup G2 QF: HKG vs JPN | - | RR | - | Isao Kobayashi | - |  Kenneth Tsui | 6-2 6-3 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-03-14 | Davis Cup G2 QF: HKG vs JPN | - | RR | - | Isao Kobayashi | - | Fong Ling | 6-3 6-2 6-1 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - |  Dick Crealy | - | Isao Kobayashi | 6-4 6-2 2-6 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - | Ray Ruffels | - | Isao Kobayashi | 6-2 6-2 6-0 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-10 | Davis Cup WG SF: JPN vs VIE | - | RR | - | Isao Kobayashi | - |  Van-Bay Vo | 6-4 6-4 9-11 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-10 | Davis Cup WG SF: JPN vs VIE | - | RR | - | Isao Kobayashi | - | Van-Thanh Vo | 6-4 8-6 6-3 | H2H | 5 | - | - | - | - | - | - | - |
Matches — 1970