| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1909 | 305 | 2245 | (76) | 13 |  
  | 1910 | 279 | 2250 | (83) | 0 |  
  | 1911 | 288 | 2254 | (89) | 0 |  
  | 1912 | 269 | 2259 | (93) | 0 |  
  | 1913 | 268 | 2264 | (96) | 0 |  
  | 1914 | 246 | 2269 | (98) | 0 |  
  | 1915 | 227 | 2273 | (100) | 0 |  
  | 1916 | 217 | 2278 | (101) | 0 |  
  | 1917 | 199 | 2283 | (101) | 0 |  
  | 1918 | 190 | 2288 | (101) | 0 |  
  | 1919 | 178 | 2292 | (99) | 0 |  
  | 1920 | 178 | 2297 | (97) | 0 |  
  | 1921 | 182 | 2302 | (95) | 0 |  
  | 1922 | 183 | 2307 | (91) | 0 |  
  | 1923 | 179 | 2312 | (86) | 0 |  
  | 1924 | 179 | 2316 | (80) | 0 |  
  | 1925 | 180 | 2321 | (72) | 0 |  
  | 1926 | 182 | 2326 | (62) | 13 |  
  | 1927 | 240 | 2304 | (62) | 16 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Genkuzen, Sergei |  | Also known as: Genkguzen |  
   | Born: |  
   | Died: |  |  |  
   | Notes: |  
   | Gaige and Di Felice have 'Genkguzen'; 64 (31 Dec. 1926, p.9) has 'S. Genkuzen'; Popovsky has 'Genkuzen'. |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1901-1920, page 127 |  
   | Gaige, Chess Tournament Crosstables II, page 330 |  | Periodicals |  
   | [64], no. 24, 31 Dec. 1926, page 9 |  | Web |  
   | Popovsky, Alexey.  [Championship of Middle Asia- 1927] |  
   | Popovsky, Alexey.  [Championship of Tashkent- 1926] |  
   | [ГЕНКУЗЕН Сергей] |  |  |