| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1906 | 381 | 2185 | (75) | 4 |  
  | 1907 | 393 | 2190 | (68) | 5 |  
  | 1908 | 388 | 2197 | (67) | 0 |  
  | 1909 | 392 | 2205 | (63) | 0 |  
  | 1910 | 369 | 2213 | (54) | 16 |  
  | 1911 | 381 | 2218 | (63) | 0 |  
  | 1912 | 352 | 2224 | (68) | 0 |  
  | 1913 | 339 | 2230 | (70) | 0 |  
  | 1914 | 307 | 2235 | (69) | 5 |  
  | 1915 | 290 | 2234 | (74) | 0 |  
  | 1916 | 294 | 2234 | (76) | 0 |  
  | 1917 | 297 | 2233 | (76) | 0 |  
  | 1918 | 300 | 2233 | (75) | 0 |  
  | 1919 | 299 | 2232 | (72) | 0 |  
  | 1920 | 313 | 2231 | (66) | 10 |  
  | 1921 | 366 | 2217 | (75) | 0 |  
  | 1922 | 418 | 2203 | (83) | 0 |  
  | 1923 | 508 | 2189 | (88) | 2 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Preiswerk, Walter Edouard |  | Also known as: Dr. Preiswerk |  
   | Born: 5 July 1885 |  
   | Died: 28 Nov. 1948 |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1901-1920, page 314 |  
   | Forster, The Zurich Chess Club, page 142, 433 |  
   | Gaige, Chess Personalia, page 340 |  
   | McGowan, Kurt Richter, page 9, 365 |  
   | Skinner and Verhoeven, Alexander Alekhine's Chess Games, page 252, 254, 255 |  
   | Thulin, Name index to CTC, page 208 |  |  |