| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1926 | 271 | 2285 | (72) | 9 |  
  | 1927 | 284 | 2287 | (67) | 0 |  
  | 1928 | 286 | 2290 | (59) | 6 |  
  | 1929 | 287 | 2288 | (54) | 0 |  
  | 1930 | 295 | 2287 | (42) | 22 |  
  | 1931 | 251 | 2315 | (42) | 6 |  
  | 1932 | 154 | 2359 | (34) | 43 |  
  | 1933 | 163 | 2354 | (42) | 0 |  
  | 1934 | 173 | 2348 | (35) | 26 |  
  | 1935 | 112 | 2387 | (28) | 61 |  
  | 1936 | 100 | 2399 | (28) | 71 |  
  | 1937 | 99 | 2396 | (34) | 41 |  
  | 1938 | 106 | 2400 | (50) | 0 |  
  | 1939 | 84 | 2403 | (56) | 0 |  
  | 1940 | 77 | 2406 | (58) | 0 |  
  | 1941 | 72 | 2410 | (54) | 13 |  
  | 1942 | 77 | 2404 | (58) | 0 |  
  | 1943 | 78 | 2398 | (58) | 0 |  
  | 1944 | 83 | 2393 | (52) | 0 |  
  | 1945 | 92 | 2387 | (38) | 32 |  
  | 1946 | 64 | 2424 | (32) | 81 |  
  | 1947 | 45 | 2440 | (31) | 100 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Gereben, Ernő |  | Also known as: Ernst Grünfeld; Ernő Grünfeld; Grünfeld, jr. |  
   | Born: 18 June 1907 |  
   | Died: 16 May 1988 |  |  |  
   | Notes: |  
   | Gaige in Chess Personalia says 'né Grünfeld, Ernst'. In Chess Tournament Crosstables (vol.4, pp.708, 820, 882, 891) he is listed as 'E. Gereben' with a footnote 'Name was originally Ernő Grünfeld of Sopron'. |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1921-1930, page 324 |  
   | Di Felice, Chess Results, 1931-1935, page 383 |  
   | Di Felice, Chess Results, 1936-1940, page 354 |  
   | Di Felice, Chess Results, 1941-1946, page 341 |  
   | Di Felice, Chess Results, 1947-1950, page 459 |  
   | Feenstra Kuiper, 100 Jahre Schachturniere, page 133 |  
   | Gaige, Chess Personalia, page 137 |  
   | Karpov, Shakhmaty, Entsyklopedichesky Slovar, page 83 |  
   | Thulin, Name index to CTC, page 85 |  |  |