| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1898 | 924 | 1806 | (144) | 3 |  
  | 1899 | 951 | 1814 | (143) | 0 |  
  | 1900 | 972 | 1823 | (142) | 0 |  
  | 1901 | 963 | 1831 | (140) | 0 |  
  | 1902 | 949 | 1839 | (139) | 0 |  
  | 1903 | 923 | 1847 | (137) | 0 |  
  | 1904 | 948 | 1856 | (135) | 0 |  
  | 1905 | 975 | 1864 | (132) | 0 |  
  | 1906 | 951 | 1872 | (130) | 0 |  
  | 1907 | 964 | 1880 | (127) | 0 |  
  | 1908 | 948 | 1888 | (124) | 0 |  
  | 1909 | 1019 | 1897 | (120) | 5 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Ehrentraut, Otto |  
   | Born: 21 Oct. 1856 |  
   | Died: |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1901-1920, page 119 |  
   | Gaige, Chess Personalia, page 104 |  
   | Thulin, Name index to CTC, page 65 |  |  |