| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R South vs L Day |
 | 0-1 | 60 |
1975 |
Quebec Open | A55 Old Indian, Main line |
| 2. J Delva vs L Day |
 | 0-1 | 47 |
1976 |
Quebec Open | A53 Old Indian |
| 3. K Spraggett vs L Day |
 | 0-1 | 42 |
1978 |
Toronto zt | A55 Old Indian, Main line |
| 4. I Lipnowski vs L Day |
| ½-½ | 23 |
1978 |
Toronto zt | A55 Old Indian, Main line |
| 5. J Berry vs L Day |
 | 0-1 | 45 |
1978 |
Toronto CAN ch | A55 Old Indian, Main line |
| 6. C Blocker vs L Day |
| 1-0 | 45 |
1979 |
5, Lone Pine op | A53 Old Indian |
| 7. K Spraggett vs L Day |
 | 1-0 | 44 |
1979 |
Quebec op | A53 Old Indian |
| 8. R Pelts vs L Day |
| 1-0 | 71 |
1979 |
World Open | A53 Old Indian |
| 9. V McCambridge vs L Day |
| ½-½ | 47 |
1979 |
8, Lone Pine op | A53 Old Indian |
| 10. Gheorghiu vs L Day |
| 1-0 | 50 |
1979 |
USA | A53 Old Indian |
| 11. Y Pustina vs L Day |
| 0-1 | 71 |
1980 |
MLT | A55 Old Indian, Main line |
| 12. K Helmers vs L Day |
| 1-0 | 22 |
1980 |
MLT | A55 Old Indian, Main line |
| 13. F Rakhinstein vs L Day |
| 0-1 | 25 |
1980 |
Toronto Chess Club | A53 Old Indian |
| 14. J D Tisdall vs L Day |
| ½-½ | 58 |
1981 |
04, New York | A53 Old Indian |
| 15. V Zaltsman vs L Day |
| ½-½ | 38 |
1981 |
Continental Open | A55 Old Indian, Main line |
| 16. Fedorowicz vs L Day |
| 1-0 | 55 |
1981 |
10, New York | A53 Old Indian |
| 17. Miles vs L Day |
| ½-½ | 17 |
1981 |
Western Canada Open | A55 Old Indian, Main line |
| 18. Seirawan vs L Day |
 | 1-0 | 32 |
1983 |
Grand Manan | A53 Old Indian |
| 19. Igor Ivanov vs L Day |
 | 0-1 | 59 |
1984 |
Grand Manan | A55 Old Indian, Main line |
| 20. J Yrjola vs L Day |
 | 1-0 | 42 |
1984 |
10, Thessaloniki olm ;BIG | A53 Old Indian |
| 21. V Puri vs L Day |
| 0-1 | 40 |
1985 |
Toronto International | A55 Old Indian, Main line |
| 22. M Wilder vs L Day |
| ½-½ | 46 |
1985 |
Toronto International Open | A53 Old Indian |
| 23. Nickoloff vs L Day |
| ½-½ | 11 |
1985 |
? | A53 Old Indian |
| 24. C Ionescu vs L Day |
| 1-0 | 94 |
1986 |
Dubai | A55 Old Indian, Main line |
| 25. Shulte Oliver vs L Day |
| 0-1 | 33 |
1987 |
Canadian Open | A55 Old Indian, Main line |