Games played by John Powell
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Powell, J | 2200 | Oda, K | 2200 | 0-1  |
59 | B33 | 1978 | Buenos Aires ol (Men) |
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| Powell, J | 2200 | De Hert, R | 2200 | ½-½ |
51 | C18 | 1978 | Buenos Aires ol (Men) |
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| Powell, J | 2200 | Downing, C | 2200 | 1-0 |
31 | C60 | 1978 | Buenos Aires ol (Men) |
|
| Powell, J | 2200 | Garrido, F | 2200 | 0-1 |
38 | B06 | 1978 | Buenos Aires ol (Men) |
|
| Powell, J | 2200 | Silva Sanchez, C | 2395 | 0-1 |
19 | A12 | 1978 | Buenos Aires ol (Men) |
|
| Powell, J | 2200 | Welz, R | 2200 | 1-0 |
40 | B38 | 1978 | Buenos Aires ol (Men) |
|
| Powell, J | 2200 | Raaste, E | 2335 | 0-1 |
35 | C16 | 1978 | Buenos Aires ol (Men) |
|
| Shimasaki, T | Powell, J | ½-½ |
44 | A03 | 1976 | WchT U26 fin-C |
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| Flores, M | Powell, J | 1-0 |
24 | C63 | 1976 | WchT U26 fin-C |
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| Duarte, F | Powell, J | 1-0 |
41 | A56 | 1976 | WchT U26 prel-3 |
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| Powell, J | Freyre, J | 1-0 |
56 | C17 | 1976 | WchT U26 prel-3 |
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| Powell, J | Kuroe, M | 1-0 |
18 | C10 | 1976 | WchT U26 prel-3 |
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| Powell, J | Orocu, M | 0-1 |
33 | B96 | 1976 | WchT U26 fin-C |
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| Powell, J | Brito, W | 0-1 |
50 | B16 | 1976 | WchT U26 fin-C |
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| Finnie, D | Powell, J | ½-½ |
56 | C88 | 1976 | WchT U26 prel-3 |
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