Ratings 
  
  | Year       | 
  Rank   | 
   Edo    | 
  Dev.   | 
  Games  | 
 
  | 1900  | 
  868  | 
  1900 |  (62) |   7 | 
 
  | 1901  | 
  846  | 
  1912 |  (54) |   15 | 
 
  | 1902  | 
  880  | 
  1889 |  (51) |   17 | 
 
  | 1903  | 
  867  | 
  1894 |  (57) |   0 | 
 
  | 1904  | 
  891  | 
  1900 |  (57) |   0 | 
 
  | 1905  | 
  909  | 
  1906 |  (52) |   17 | 
 
  | 1906  | 
  956  | 
  1866 |  (54) |   8 | 
 
  | 1907  | 
  1023  | 
  1833 |  (56) |   12 | 
 
  | 1908  | 
  1034  | 
  1807 |  (60) |   7 | 
 
  | 1909  | 
  1154  | 
  1775 |  (65) |   15 | 
 
  
Rating table notes
 
 | 
| Biographical data |  
   | Name: Clark, John W.   | 
 
   | Born:  | 
 
   | Died:  | 
 
|   |  
   | Notes: | 
 
   | Di Felice has 'Clark, James W.' at Excelsior 1900; chessgames.com has 'John W Clark' at that and later events at Excelsior. The Minneapolis Journal of 15 Aug. 1901 has 'J.W. Clark' at Excelsior 1901; the issue of 19 Aug. 1901 has 'J.H. Clark' in one place but 'J.W. Clark' in another. | 
 
  |  
|   |  
   | References | 
 
| Books |  
   |    Di Felice, Chess Results, 1747-1900, page 223 | 
 
   |    Thulin, Name index to CTC, page 48 | 
 
| Periodicals |  
   |    [BDE], vol. 62, no. 234, 24 Aug. 1902, page 7 | 
 
   |    [MiJ], 15 Aug. 1901 | 
 
   |    [MiJ], 19 Aug. 1901 | 
 
   |    [MiTr], vol. 33, no. 279, 23 Feb. 1900, page 5 | 
 
   |    [SPG], vol. 23, no. 55, 24 Feb. 1900, page 5 | 
 
| Web |  
   |    [US Open 1900, Excelsior = Northwestern Champ] | 
 
   |    [US Open 1907, Excelsior = 8th Western Champ.] | 
 
 
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