| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1864 | 261 | 2007 | (86) | 7 |  
  | 1865 | 282 | 2001 | (86) | 0 |  
  | 1866 | 308 | 1994 | (84) | 14 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Knox, J. Warner |  | Also known as: Dr. J. Warner Knox |  
   | Born: |  
   | Died: |  |  |  |  
   | References |  | 
| Books |  
   | American Chess Association, Constitution of the American Chess Association, page 3 |  
   | Reichhelm and Shipley, Chess in Philadelphia, page 10, 77 |  | Periodicals |  
   | [CLCM], vol. 1, no. 11, Dec. 1874, page 271 |  
   | [DCJ], vol. 8, no. 65, July 1875, page 317 |  
   | [HWT], 1 Nov. 1873 |  
   | [MCR], vol. 1, no. 11, Nov. 1874, page 452 |  
   | [NYC], 17 Feb. 1866 |  
   | [PDEB], 5 Mar. 1864 |  
   | [PDEB], 12 Mar. 1864 |  
   | [PDEB], 23 July 1869 |  
   | [SoT], 31 Oct. 1874 |  
   | [WP], vol. 7, no. 8, 1 Dec. 1874, page 153 |  |  |