| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1941 | 1087 | 1994 | (131) | 5 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Verkaik, E. |  
   | Born: |  
   | Died: |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1941-1946, page 18 |  
   | Skinner and Verhoeven, Alexander Alekhine's Chess Games, page 477 |  |  |