| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Keene vs M Yeo |
 | 1-0 | 26 | 1970 | College Match | A52 Budapest Gambit |
| 2. M Yeo vs Pachman |
| ½-½ | 21 | 1972 | Islington Open | C47 Four Knights |
| 3. H MacGrillen vs M Yeo |
| 0-1 | 52 | 1972 | Islington Open | C73 Ruy Lopez, Modern Steinitz Defense |
| 4. M Yeo vs D Wright |
| 0-1 | 44 | 1972 | Islington Open | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 5. M Yeo vs I O'Donnell |
| 1-0 | 23 | 1973 | GRE Islington Open | C15 French, Winawer |
| 6. J Grefe vs M Yeo |
| 1-0 | 34 | 1973 | GRE Islington Open | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 7. M Yeo vs S J Hutchings |
| 0-1 | 45 | 1973 | GRE Islington Open | C02 French, Advance |
| 8. M Yeo vs R Hess |
| 1-0 | 23 | 1977 | London | C30 King's Gambit Declined |
| 9. Chandler vs M Yeo |
| 1-0 | 37 | 1977 | Charlton op 5th | C44 King's Pawn Game |
| 10. M J Franklin vs M Yeo |
| 1-0 | 31 | 1977 | 1st Lloyds Bank Masters Open | D02 Queen's Pawn Game |
| 11. M Yeo vs N J Patterson |
| ½-½ | 38 | 1977 | 1st Lloyds Bank Masters Open | B97 Sicilian, Najdorf |
| 12. M Yeo vs C Crouch |
| ½-½ | 42 | 1977 | 1st Lloyds Bank Masters Open | B33 Sicilian |
| 13. N Povah vs M Yeo |
| 0-1 | 41 | 1977 | 1st Lloyds Bank Masters Open | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 14. M Basman vs M Yeo |
| 1-0 | 45 | 1977 | 1st Lloyds Bank Masters Open | D02 Queen's Pawn Game |
| 15. M Yeo vs G H James |
| ½-½ | 42 | 1977 | 1st Lloyds Bank Masters Open | B06 Robatsch |
| 16. M Yeo vs E Rayner |
| 0-1 | 31 | 1977 | 1st Lloyds Bank Masters Open | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 17. M Yeo vs Milner-Barry |
| 0-1 | 45 | 1977 | Guernsey op | C34 King's Gambit Accepted |
| 18. M Yeo vs S Berry |
| 0-1 | 44 | 1978 | 2nd Lloyds Bank Masters Open | C35 King's Gambit Accepted, Cunningham |
| 19. Benjamin vs M Yeo |
| 1-0 | 34 | 1978 | 2nd Lloyds Bank Masters Open | C73 Ruy Lopez, Modern Steinitz Defense |
| 20. R Blow vs M Yeo |
| ½-½ | 45 | 1978 | 2nd Lloyds Bank Masters Open | A27 English, Three Knights System |
| 21. M Yeo vs T B Bennett |
| 0-1 | 40 | 1978 | 2nd Lloyds Bank Masters Open | C15 French, Winawer |
| 22. M Yeo vs A Bernfield |
| 1-0 | 19 | 1978 | 2nd Lloyds Bank Masters Open | B13 Caro-Kann, Exchange |
| 23. Short vs M Yeo |
| ½-½ | 48 | 1978 | 2nd Lloyds Bank Masters Open | A00 Uncommon Opening |
| 24. P Large vs M Yeo |
| 1-0 | 57 | 1978 | 2nd Lloyds Bank Masters Open | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 25. M Yeo vs J C Henshaw |
| ½-½ | 23 | 1978 | 2nd Lloyds Bank Masters Open | C45 Scotch Game |
Kibitzing
