| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. I Theodorovich vs L Day |
 | 1-0 | 30 |
1962 |
CAN-op | A07 King's Indian Attack |
| 2. G Danilov vs L Day |
| 1-0 | 57 |
1962 |
Canadian Open | E43 Nimzo-Indian, Fischer Variation |
| 3. L Day vs H O Payne |
| 1-0 | 14 |
1962 |
CAN-op | B29 Sicilian, Nimzovich-Rubinstein |
| 4. Z Sarosy vs L Day |
| 1-0 | 48 |
1964 |
Canadian Open | E71 King's Indian, Makagonov System (5.h3) |
| 5. L Day vs D Grimshaw |
| 1-0 | 15 |
1965 |
Ontario | B10 Caro-Kann |
| 6. I Theodorovich vs L Day |
| 1-0 | 31 |
1965 |
ON-op | A49 King's Indian, Fianchetto without c4 |
| 7. L Day vs V Pedersen |
| 1-0 | 24 |
1965 |
RA CC-ch | D51 Queen's Gambit Declined |
| 8. L Day vs T Ackermann |
| 1-0 | 45 |
1966 |
Ottawa-Montreal m | C00 French Defense |
| 9. Ivkov vs L Day |
| 1-0 | 34 |
1966 |
Canadian Open | C60 Ruy Lopez |
| 10. L Day vs R C Simpson |
| 1-0 | 36 |
1966 |
League Ottawa-Cornwall | C29 Vienna Gambit |
| 11. L Day vs B Leckie |
| 1-0 | 37 |
1966 |
Canadian Open | B12 Caro-Kann Defense |
| 12. L Day vs K Winterton |
| 1-0 | 20 |
1966 |
Ottawa Championship | D15 Queen's Gambit Declined Slav |
| 13. L Day vs A Zuntacks |
| 1-0 | 48 |
1966 |
Canadian Open | C00 French Defense |
| 14. L Day vs A Portigal |
| 1-0 | 32 |
1966 |
Ottawa Championship | B25 Sicilian, Closed |
| 15. L Day vs C Coudari |
| 1-0 | 42 |
1966 |
Canadian Open | B12 Caro-Kann Defense |
| 16. L Day vs M Saltzberg |
| 1-0 | 40 |
1967 |
Atlantic Open | C97 Ruy Lopez, Closed, Chigorin |
| 17. Jack Gersho vs L Day |
| 1-0 | 28 |
1967 |
Carnaval | A60 Benoni Defense |
| 18. L Asplund vs L Day |
| 1-0 | 45 |
1967 |
07, Jerusalem | B56 Sicilian |
| 19. L Day vs G Sigurjonsson |
| 1-0 | 28 |
1967 |
Wch U20 qual-A | B20 Sicilian |
| 20. L Day vs S Spencer |
| 1-0 | 33 |
1967 |
Ontario Open | B25 Sicilian, Closed |
| 21. L Day vs F Bohatirchuk |
| 1-0 | 36 |
1967 |
League Ottawa RA-Carleton U | C75 Ruy Lopez, Modern Steinitz Defense |
| 22. L Day vs M Woodhams |
| 1-0 | 47 |
1967 |
World-U20 Champ Prelim | A00 Uncommon Opening |
| 23. F Bohatirchuk vs L Day |
| 1-0 | 59 |
1968 |
RA CC - Carleton m | B23 Sicilian, Closed |
| 24. J Adamski vs L Day |
| 1-0 | 40 |
1968 |
06, Lugano | E11 Bogo-Indian Defense |
| 25. H Rossetto vs L Day |
| 1-0 | 49 |
1968 |
04, Lugano | B06 Robatsch |
