Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1901 |
1152 |
1446 | (128) | 15 |
| 1902 |
1115 |
1444 | (131) | 0 |
| 1903 |
1059 |
1441 | (134) | 0 |
| 1904 |
1113 |
1438 | (137) | 0 |
| 1905 |
1157 |
1436 | (139) | 0 |
| 1906 |
1113 |
1433 | (141) | 0 |
| 1907 |
1155 |
1431 | (144) | 0 |
| 1908 |
1156 |
1428 | (145) | 0 |
| 1909 |
1251 |
1426 | (147) | 0 |
| 1910 |
1229 |
1423 | (149) | 0 |
| 1911 |
1254 |
1420 | (150) | 12 |
Rating table notes
|
| Biographical data |
| Name: Couper, Charles Sumner |
| Born: |
| Died: |
| |
| Notes: |
| Gaige and Di Felice have 'C.S. Cooper' at Excelsior 1901, but 'C.S. Couper' at Excelsior 1911; chessgames.com has 'Charles Sumner Couper' at both. The Minneapolis Journal of 19 Aug. 1901 has 'C.S. Couper'. |
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| References |
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