| RR | L | Dick Crealy | 6-4 6-2 2-6 6-4 | H2H |
| RR | L | Ray Ruffels | 6-2 6-2 6-0 | H2H |
🇯🇵 JPN · b. 1941-11-21
Isao Kobayashi
Active 1968–1970
4–3
0
0
0
0
5
Career summary
Isao Kobayashi of Japan is a former player who competed on the ATP tour from 1968 to 1970. He finished with a career match record of 4–3 (57.1%). His best three-year stretch came in 1968–1970, and he reached a peak Elo rating of 1625.
Clay
0–2 (0.0%)
Grass
0–1 (0.0%)
Match results
| RR | W | Van-Thanh Vo | 6-4 8-6 6-3 | H2H |
| RR | W | Van-Bay Vo | 6-4 6-4 9-11 6-2 | H2H |
| RR | W | Fong Ling | 6-3 6-2 6-1 | H2H |
| RR | W | Kenneth Tsui | 6-2 6-3 6-3 | H2H |
Methodology
Titles include Slams, Masters, Tour Finals, 500s, 250s, legacy tour events and Olympic gold; Davis Cup is excluded, and walkovers are excluded from all win–loss records. GOAT points value every round reached, scaled per tier (Slam title 2000 anchor; ranking includes Slam champions only, but every player's points are shown here). Elo is a chess-style rating over the full match history (K = 250/(n+5)^0.4); the timeline shows pre-match ratings, sampled. The gold band on the season chart marks the best three-consecutive-year window.