| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. H MacGrillen vs M Yeo |
| 0-1 | 52 |
1972 |
Islington op | C73 Ruy Lopez, Modern Steinitz Defense |
| 2. M Yeo vs R Hess |
| 1-0 | 23 |
1977 |
London | C30 King's Gambit Declined |
| 3. M Yeo vs Milner-Barry |
 | 0-1 | 45 |
1977 |
Guernsey op | C34 King's Gambit Accepted |
| 4. J Benjamin vs M Yeo |
| 1-0 | 34 |
1978 |
London (England) | C73 Ruy Lopez, Modern Steinitz Defense |
| 5. M Yeo vs S Berry |
| 0-1 | 44 |
1978 |
Lloyds Bank | C35 King's Gambit Accepted, Cunningham |
| 6. M Yeo vs J Henshaw |
 | ½-½ | 23 |
1978 |
Lloyds Bank | C45 Scotch Game |
| 7. R Blow vs M Yeo |
| ½-½ | 45 |
1978 |
Lloyds Bank | A27 English, Three Knights System |
| 8. M Yeo vs I D Wells |
| 0-1 | 32 |
1979 |
Lloyds Bank Open | B13 Caro-Kann, Exchange |
| 9. R Saunders vs M Yeo |
| ½-½ | 21 |
1988 |
corres GBR | C30 King's Gambit Declined |
| 10. N Burton vs M Yeo |
| 0-1 | 37 |
2001 |
ch-Hampshire | B00 Uncommon King's Pawn Opening |
| 11. D Tunks vs M Yeo |
| ½-½ | 11 |
2001 |
ch-Hampshire | D02 Queen's Pawn Game |
| 12. S Barrett vs M Yeo |
| ½-½ | 47 |
2001 |
4NCL | D20 Queen's Gambit Accepted |
| 13. M Yeo vs T Rendle |
| 0-1 | 36 |
2001 |
ch-Hampshire | C18 French, Winawer |
| 14. M Yeo vs D Tan |
| ½-½ | 34 |
2001 |
4NCL | B77 Sicilian, Dragon, Yugoslav Attack |
| 15. M Yeo vs J H Hodgson |
| ½-½ | 30 |
2001 |
4NCL | B77 Sicilian, Dragon, Yugoslav Attack |
| 16. S Gonem vs M Yeo |
 | 0-1 | 11 |
2001 |
ch-Hampshire | C45 Scotch Game |
| 17. T Thiruchelvam vs M Yeo |
| 0-1 | 34 |
2001 |
4NCL | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 18. M Yeo vs J F Wheeler |
| 1-0 | 19 |
2001 |
ch-Hampshire | B12 Caro-Kann Defense |
| 19. W Purkiss vs M Yeo |
| ½-½ | 38 |
2001 |
ch-Hampshire | C47 Four Knights |
| 20. D Ledger vs M Yeo |
| ½-½ | 68 |
2002 |
4NCL | C50 Giuoco Piano |
| 21. M Yeo vs N Povah |
| 0-1 | 31 |
2002 |
4NCL | B01 Scandinavian |
| 22. M Yeo vs J Houska |
| 0-1 | 38 |
2008 |
European Union Championships | B12 Caro-Kann Defense |
| 23. M Yeo vs L D'Costa |
| 0-1 | 35 |
2008 |
European Union Championships | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 24. M White vs M Yeo |
| 1-0 | 29 |
2008 |
European Union Championships | C45 Scotch Game |
| 25. M Yeo vs I Cross |
| 1-0 | 43 |
2008 |
European Union Championships | C13 French |