| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1916 | 489 | 2150 | (73) | 8 |  
  | 1917 | 481 | 2153 | (71) | 0 |  
  | 1918 | 480 | 2157 | (66) | 0 |  
  | 1919 | 473 | 2161 | (59) | 8 |  
  | 1920 | 512 | 2160 | (56) | 0 |  
  | 1921 | 551 | 2159 | (49) | 12 |  
  | 1922 | 672 | 2124 | (48) | 11 |  
  | 1923 | 780 | 2109 | (51) | 11 |  
  | 1924 | 734 | 2131 | (58) | 0 |  
  | 1925 | 675 | 2153 | (60) | 0 |  
  | 1926 | 612 | 2174 | (58) | 9 |  
  | 1927 | 607 | 2182 | (66) | 0 |  
  | 1928 | 614 | 2190 | (70) | 0 |  
  | 1929 | 598 | 2198 | (72) | 0 |  
  | 1930 | 584 | 2205 | (71) | 9 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Singer, Leone |  | Also known as: Dr. Singer |  
   | Born: 11 Nov. 1893 |  
   | Died: 21 Sep. 1975 |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1901-1920, page 317 |  
   | Di Felice, Chess Results, 1921-1930, page 337 |  
   | Gaige, Chess Personalia, page 393 |  
   | Thulin, Name index to CTC, page 251 |  | Periodicals |  
   | [WSZ], vol. 4, no. 20, Oct. 1926, page 317 |  |  |