Ratings 
  
  | Year       | 
  Rank   | 
   Edo    | 
  Dev.   | 
  Games  | 
 
  | 1889  | 
  176  | 
  2272 |  (70) |   8 | 
 
  | 1890  | 
  160  | 
  2288 |  (66) |   0 | 
 
  | 1891  | 
  138  | 
  2304 |  (59) |   14 | 
 
  | 1892  | 
  207  | 
  2252 |  (58) |   11 | 
 
  | 1893  | 
  233  | 
  2231 |  (58) |   7 | 
 
  | 1894  | 
  227  | 
  2236 |  (57) |   14 | 
 
  | 1895  | 
  254  | 
  2217 |  (67) |   0 | 
 
  | 1896  | 
  274  | 
  2197 |  (73) |   0 | 
 
  | 1897  | 
  313  | 
  2178 |  (77) |   0 | 
 
  | 1898  | 
  353  | 
  2159 |  (78) |   8 | 
 
  
Rating table notes
 
 | 
| Biographical data |  
   | Name: Davison, A. Thomas   | 
 
   | Born:  | 
 
   | Died:  | 
 
|   |  
   | Notes: | 
 
   | The Quebec Daily Chronicle of 4 Apr. 1893 (p.4) has 'A.P. Davidson'. | 
 
  |  
|   |  
   | References | 
 
| Books |  
   |    Gaige, Chess Personalia, page 86 | 
 
   |    Hilbert, Young Marshall, page 11, 12, 128 | 
 
   |    Soltis, Frank Marshall, page 4 | 
 
   |    Yanofsky, 100 Years of Chess in Canada, page 27 | 
 
| Periodicals |  
   |    [QMC], vol. 47, no. 17399, 4 Apr. 1893, page 4 | 
 
   |    [QMC], vol. 47, no. 17400, 5 Apr. 1893, page 4 | 
 
   |    [QMC], vol. 47, no. 17406, 12 Apr. 1893, page 4 | 
 
| Web |  
   |    Cohen, David.  [Canadian Chess: A. Thomas Davison] | 
 
   |    Cohen, David.  [Canadian Chess: Champions - Closed] | 
 
   |    Wright, Stephen.  [Early Canadian Championships] | 
 
 
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