| 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. J L Watson vs Lombardy |
| 0-1 | 35 |
1975 |
US Open | B43 Sicilian, Kan, 5.Nc3 |
| 3. Keres vs J L Watson |
| 1-0 | 33 |
1975 |
Vancouver (20.05.75) | A46 Queen's Pawn Game |
| 4. Christiansen vs J L Watson |
| 1-0 | 36 |
1976 |
USA | A04 Reti Opening |
| 5. Shamkovich vs J L Watson |
| 1-0 | 44 |
1976 |
USA | C05 French, Tarrasch |
| 6. J L Watson vs Y Rantanen |
| 0-1 | 63 |
1978 |
Lloyds Bank | A19 English, Mikenas-Carls, Sicilian Variation |
| 7. C Van Tilbury vs J L Watson |
| 1-0 | 31 |
1979 |
C.I. International | D07 Queen's Gambit Declined, Chigorin Defense |
| 8. J Benjamin vs J L Watson |
| 1-0 | 39 |
1979 |
2, Lone Pine op | A71 Benoni, Classical, 8.Bg5 |
| 9. J L Watson vs K Shirazi |
| 0-1 | 22 |
1979 |
Lone | A28 English |
| 10. Adorjan vs J L Watson |
| 1-0 | 31 |
1981 |
New York (USA) | C05 French, Tarrasch |
| 11. J L Watson vs Keene |
| 0-1 | 32 |
1981 |
New York (USA) | A36 English |
| 12. J L Watson vs Igor Ivanov |
| 0-1 | 38 |
1983 |
? | B13 Caro-Kann, Exchange |
| 13. J L Watson vs C Hertan |
| 0-1 | 33 |
1984 |
CCA February Open | A10 English |
| 14. Khalifman vs J L Watson |
| 1-0 | 38 |
1985 |
Moscow (Russia) | A48 King's Indian |
| 15. Khalifman vs J L Watson |
| 1-0 | 22 |
1991 |
London (England) | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 16. J Benjamin vs J L Watson |
| 1-0 | 49 |
1993 |
It (open) | C02 French, Advance |
| 17. Remlinger vs J L Watson |
| 1-0 | 42 |
1993 |
World Op, Philadelphia | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 18. J L Watson vs Yermolinsky |
| 0-1 | 41 |
1994 |
it Reno USA | E11 Bogo-Indian Defense |
| 19. J L Watson vs M Donaghay |
| 0-1 | 29 |
1994 |
SNCL Div 1 Aberdeen 1-Castlehill 2 | C52 Evans Gambit |
| 20. J L Watson vs Browne |
| 0-1 | 35 |
1994 |
Las Vegas (USA) | E11 Bogo-Indian Defense |
| 21. Browne vs J L Watson |
| 1-0 | 33 |
1994 |
Las Vegas | E94 King's Indian, Orthodox |
| 22. Igor Ivanov vs J L Watson |
| 1-0 | 57 |
1995 |
American op 0 (08) | E92 King's Indian |
| 23. Yermolinsky vs J L Watson |
| 1-0 | 34 |
1995 |
CalChess/Mechanic's College | E73 King's Indian |
| 24. G Timoshchenko vs J L Watson |
| 1-0 | 33 |
1997 |
Berliner Sommer 15th | E91 King's Indian |
| 25. J L Watson vs Aronian |
| 0-1 | 55 |
1999 |
Ubeda op 4th | A55 Old Indian, Main line |
