| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Curdo vs J L Watson |
 | 1-0 | 27 |
1970 |
Boston Open | B28 Sicilian, O'Kelly Variation |
| 2. Keres vs J L Watson |
| 1-0 | 33 |
1975 |
Vancouver (20.05.75) | A46 Queen's Pawn Game |
| 3. Christiansen vs J L Watson |
| 1-0 | 36 |
1976 |
USA | A04 Reti Opening |
| 4. Shamkovich vs J L Watson |
| 1-0 | 44 |
1976 |
USA | C05 French, Tarrasch |
| 5. C Van Tilbury vs J L Watson |
| 1-0 | 31 |
1979 |
C.I. International | D07 Queen's Gambit Declined, Chigorin Defense |
| 6. J Benjamin vs J L Watson |
| 1-0 | 39 |
1979 |
2, Lone Pine op | A71 Benoni, Classical, 8.Bg5 |
| 7. Adorjan vs J L Watson |
| 1-0 | 31 |
1981 |
New York (USA) | C05 French, Tarrasch |
| 8. J L Watson vs L Day |
| 1-0 | 43 |
1981 |
02, New York | A10 English |
| 9. J L Watson vs Shamkovich |
| 1-0 | 60 |
1981 |
Ch Manhattan Chess Club | A18 English, Mikenas-Carls |
| 10. J L Watson vs Dreev |
| 1-0 | 33 |
1985 |
Moscow (Russia) | C26 Vienna |
| 11. Khalifman vs J L Watson |
| 1-0 | 38 |
1985 |
Moscow (Russia) | A48 King's Indian |
| 12. Khalifman vs J L Watson |
| 1-0 | 22 |
1991 |
London (England) | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 13. J L Watson vs Z Fayvinov |
| 1-0 | 27 |
1993 |
World Op, Philadelphia | A57 Benko Gambit |
| 14. J Benjamin vs J L Watson |
| 1-0 | 49 |
1993 |
It (open) | C02 French, Advance |
| 15. Remlinger vs J L Watson |
| 1-0 | 42 |
1993 |
World Op, Philadelphia | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 16. J L Watson vs W Alexander |
| 1-0 | 34 |
1994 |
SNCL Div 1 Aberdeen 2-Castlehill 2 | C46 Three Knights |
| 17. Browne vs J L Watson |
| 1-0 | 33 |
1994 |
Las Vegas | E94 King's Indian, Orthodox |
| 18. J L Watson vs G Orlov |
| 1-0 | 65 |
1994 |
Reno (USA) | E11 Bogo-Indian Defense |
| 19. Yermolinsky vs J L Watson |
| 1-0 | 34 |
1995 |
CalChess/Mechanic's College | E73 King's Indian |
| 20. Igor Ivanov vs J L Watson |
| 1-0 | 57 |
1995 |
American op 0 (08) | E92 King's Indian |
| 21. G Timoshchenko vs J L Watson |
| 1-0 | 33 |
1997 |
Berliner Sommer 15th | E91 King's Indian |
| 22. J L Watson vs A Caoili |
| 1-0 | 54 |
1997 |
Hawaii op | E76 King's Indian, Four Pawns Attack |
| 23. Kharlov vs J L Watson |
| 1-0 | 41 |
1999 |
Ubeda op 4th | E71 King's Indian, Makagonov System (5.h3) |
