| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1896 | 262 | 2208 | (57) | 22 |  
  | 1897 | 320 | 2173 | (64) | 0 |  
  | 1898 | 386 | 2139 | (67) | 7 |  
  | 1899 | 413 | 2134 | (77) | 0 |  
  | 1900 | 439 | 2130 | (85) | 0 |  
  | 1901 | 457 | 2125 | (91) | 0 |  
  | 1902 | 480 | 2121 | (96) | 0 |  
  | 1903 | 496 | 2117 | (100) | 0 |  
  | 1904 | 531 | 2112 | (104) | 0 |  
  | 1905 | 548 | 2108 | (107) | 0 |  
  | 1906 | 560 | 2103 | (109) | 0 |  
  | 1907 | 578 | 2099 | (111) | 0 |  
  | 1908 | 598 | 2095 | (112) | 0 |  
  | 1909 | 652 | 2090 | (112) | 0 |  
  | 1910 | 661 | 2086 | (113) | 0 |  
  | 1911 | 688 | 2082 | (113) | 0 |  
  | 1912 | 684 | 2077 | (112) | 0 |  
  | 1913 | 705 | 2073 | (111) | 0 |  
  | 1914 | 702 | 2068 | (109) | 0 |  
  | 1915 | 673 | 2064 | (107) | 0 |  
  | 1916 | 678 | 2060 | (105) | 0 |  
  | 1917 | 684 | 2055 | (101) | 0 |  
  | 1918 | 698 | 2051 | (97) | 0 |  
  | 1919 | 705 | 2046 | (93) | 0 |  
  | 1920 | 785 | 2042 | (87) | 9 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Horwitz, Leopold |  
   | Born: |  
   | Died: |  |  |  
   | Notes: |  
   | Chessgames.com says he was the grandson of Bernhard Horwitz. Gaige has 'Horwitz' at Vienna 1895-1896, 'L. Horowitz' at Vienna (1897-)1898, and 'Horowitz' at Vienna 1920 and Vienna 1926, which might be Leopold Horwitz. Di Felice has 'Horwitz, C.' at Vienna 1895-1896 and 'Horowitz, Leopold' at Vienna 1897-1898. Chessgames.com has Leopold Horwitz at Vienna 1895-1896. |  |  |  |  
   | References |  |  |  |