| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. P H Nielsen vs Y Masserey |
| 1-0 | 25 | 1991 | World Junior Championship | E31 Nimzo-Indian, Leningrad, Main line |
| 27. S Rocha vs Y Masserey |
| 1-0 | 30 | 1991 | World Junior Championship | C00 French Defense |
| 28. Y Masserey vs E van Beers |
| ½-½ | 22 | 1991 | World Junior Championship | C63 Ruy Lopez, Schliemann Defense |
| 29. J Gonzalez Garcia vs Y Masserey |
| ½-½ | 19 | 1991 | World Junior Championship | D35 Queen's Gambit Declined |
| 30. Y Masserey vs C G Ong |
| 1-0 | 27 | 1991 | World Junior Championship | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 31. Y Masserey vs D Gurevich |
| 0-1 | 33 | 1992 | Geneva op | B56 Sicilian |
| 32. K Vreeken vs Y Masserey |
| 0-1 | 28 | 1992 | Steinweg Open | C02 French, Advance |
| 33. T van Eck vs Y Masserey |
| 0-1 | 34 | 1992 | Steinweg Open | C05 French, Tarrasch |
| 34. Y Masserey vs F Palacios Llera |
| 1-0 | 48 | 1992 | Steinweg Open | B36 Sicilian, Accelerated Fianchetto |
| 35. E Torman vs Y Masserey |
| 1-0 | 46 | 1992 | World Junior Championship | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 36. S Grainger vs Y Masserey |
| 0-1 | 59 | 1992 | World Junior Championship | E00 Queen's Pawn Game |
| 37. Y Masserey vs J Sequera |
| 0-1 | 22 | 1992 | World Junior Championship | C02 French, Advance |
| 38. R Nakamura vs Y Masserey |
| 0-1 | 30 | 1992 | World Junior Championship | E29 Nimzo-Indian, Samisch |
| 39. Y Masserey vs G Thallinger |
| ½-½ | 46 | 1992 | World Junior Championship | B33 Sicilian |
| 40. G Leon vs Y Masserey |
| ½-½ | 41 | 1992 | World Junior Championship | C18 French, Winawer |
| 41. Y Masserey vs G Vescovi |
| 0-1 | 45 | 1992 | World Junior Championship | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 42. A Escobar Forero vs Y Masserey |
| ½-½ | 56 | 1992 | World Junior Championship | C05 French, Tarrasch |
| 43. Y Masserey vs G Mastrokoukos |
| 1-0 | 33 | 1992 | World Junior Championship | B45 Sicilian, Taimanov |
| 44. Y Masserey vs E Favaro |
| ½-½ | 42 | 1992 | World Junior Championship | C17 French, Winawer, Advance |
| 45. Y Masserey vs S Silva Lillo |
| ½-½ | 49 | 1992 | World Junior Championship | B32 Sicilian |
| 46. M Playa vs Y Masserey |
 | 1-0 | 38 | 1992 | World Junior Championship | C18 French, Winawer |
| 47. C Jepson vs Y Masserey |
| 1-0 | 29 | 1992 | World Junior Championship | C05 French, Tarrasch |
| 48. Pelletier vs Y Masserey |
| 1-0 | 48 | 1993 | Silvaplana open | A40 Queen's Pawn Game |
| 49. E Walther vs Y Masserey |
| 1-0 | 26 | 1993 | SUI-ch | A22 English |
| 50. Y Masserey vs C Bauer |
| 0-1 | 40 | 1993 | European Junior Championship | C02 French, Advance |
Kibitzing
