| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Watanabe vs A Holmsten |
| 0-1 | 36 | 1990 | World Junior Championship | B33 Sicilian |
| 2. A Rahman vs A Watanabe |
| 0-1 | 50 | 1990 | World Junior Championship | B90 Sicilian, Najdorf |
| 3. A Watanabe vs E Peralta |
| 0-1 | 19 | 1990 | World Junior Championship | C14 French, Classical |
| 4. T Weidig vs A Watanabe |
| 1-0 | 50 | 1990 | World Junior Championship | A07 King's Indian Attack |
| 5. A Watanabe vs P Pilgrim |
| ½-½ | 42 | 1990 | World Junior Championship | A04 Reti Opening |
| 6. M Pardo vs A Watanabe |
| 1-0 | 71 | 1990 | World Junior Championship | E70 King's Indian |
| 7. A Watanabe vs A Nunez Garcia |
| 0-1 | 50 | 1990 | World Junior Championship | B28 Sicilian, O'Kelly Variation |
| 8. A Watanabe vs P Tuffery |
| 1-0 | 33 | 1990 | World Junior Championship | B09 Pirc, Austrian Attack |
| 9. F Figueroa vs A Watanabe |
| 1-0 | 34 | 1990 | World Junior Championship | B90 Sicilian, Najdorf |
| 10. L Savas vs A Watanabe |
| ½-½ | 56 | 1991 | World Junior Championship | B90 Sicilian, Najdorf |
| 11. L Seres vs A Watanabe |
| 1-0 | 39 | 1991 | World Junior Championship | E69 King's Indian, Fianchetto, Classical Main line |
| 12. A Watanabe vs C G Ong |
| 1-0 | 40 | 1991 | World Junior Championship | E97 King's Indian |
| 13. G B Prakash vs A Watanabe |
| ½-½ | 65 | 1991 | World Junior Championship | A56 Benoni Defense |
| 14. A Watanabe vs R Barcenilla |
| 0-1 | 43 | 1991 | World Junior Championship | E97 King's Indian |
| 15. A Watanabe vs K Le Quang |
| 1-0 | 61 | 1991 | World Junior Championship | E97 King's Indian |
| 16. H Stefansson vs A Watanabe |
| 1-0 | 28 | 1991 | World Junior Championship | B80 Sicilian, Scheveningen |
| 17. A Watanabe vs N Bathie |
| 0-1 | 25 | 1991 | World Junior Championship | D17 Queen's Gambit Declined Slav |
| 18. S Rocha vs A Watanabe |
| 1-0 | 22 | 1991 | World Junior Championship | B40 Sicilian |
| 19. A Watanabe vs P Atkinson |
| ½-½ | 52 | 1991 | World Junior Championship | D85 Grunfeld |
| 20. C Buckley vs A Watanabe |
| 0-1 | 32 | 1991 | World Junior Championship | A03 Bird's Opening |
| 21. A Watanabe vs A Vouldis |
| ½-½ | 41 | 1991 | World Junior Championship | D10 Queen's Gambit Declined Slav |
| 22. E Van Beers vs A Watanabe |
| ½-½ | 10 | 1991 | World Junior Championship | E82 King's Indian, Samisch, double Fianchetto Variation |
| 23. R Wijesundara vs A Watanabe |
| 1-0 | 21 | 1996 | Yerevan Olympiad | D48 Queen's Gambit Declined Semi-Slav, Meran |
| 24. T Dao vs A Watanabe |
| ½-½ | 39 | 1998 | Zonal 3.2 | E80 King's Indian, Samisch Variation |
| 25. A Watanabe vs Z Lanka |
| 0-1 | 30 | 1999 | Cappelle Open | E92 King's Indian |
Kibitzing
