Ranking history updated: 2026-03-17 04:30 UTC
Kouichi Sayama ATP Ranking History
Kouichi Sayama's ATP ranking history, with year-by-year summaries plus every available weekly rank, age and points snapshot.
Latest Rank
804
Latest date
Dec 3, 1990
Career high
534
Career-high date
Jul 28, 1986
Career-high points
4
Points-high date
Jan 1, 1990
Best year-end
601
Weeks at #1
0
Coverage: 204 distinct observed ranking weeks, Jan 3, 1983–Dec 3, 1990. Available-week totals may undercount careers where historical snapshots are missing. Weeks at No. 1 counts available snapshots.
Select a legend item to show or hide that series. Focus the chart and use the left and right arrow keys to inspect ranking snapshots.
| Season | Date | Week | Age | Rank | Points |
|---|---|---|---|---|---|
| 1990 | Nov 12 | 46 | — | #811 | 4 |
| 1990 | Nov 19 | 47 | — | #805 | 4 |
| 1990 | Nov 26 | 48 | — | #805 | 4 |
| 1990 | Dec 3 | 49 | — | #804 | 4 |