Game |
| Result | Moves |
Year | Event/Locale | Opening |
26. W Martz vs R Wilcox |
| 1-0 | 38 | 1969 | 70th US Open | E79 King's Indian, Four Pawns Attack, Main line |
27. O Popovych vs W Martz |
| 0-1 | 40 | 1969 | 70th US Open | B85 Sicilian, Scheveningen, Classical |
28. W Martz vs R Byrne |
| 0-1 | 73 | 1969 | 70th US Open | D82 Grunfeld, 4.Bf4 |
29. W Martz vs T Wozney |
| 1-0 | 56 | 1969 | 70th US Open | D55 Queen's Gambit Declined |
30. A Bisguier vs W Martz |
| ½-½ | 76 | 1969 | 70th US Open | D94 Grunfeld |
31. Benko vs W Martz |
| ½-½ | 20 | 1969 | 70th US Open | B36 Sicilian, Accelerated Fianchetto |
32. W Martz vs R Newbold |
| 1-0 | 62 | 1971 | Lone Pine | E78 King's Indian, Four Pawns Attack, with Be2 and Nf3 |
33. W Martz vs J Tarjan |
 | 0-1 | 29 | 1971 | Lone Pine | A22 English |
34. W Martz vs B Kakimi |
| 1-0 | 42 | 1971 | 72nd US Open | A21 English |
35. D Presser vs W Martz |
| ½-½ | 57 | 1971 | 72nd US Open | B47 Sicilian, Taimanov (Bastrikov) Variation |
36. W Martz vs P D Smith |
| 1-0 | 41 | 1971 | 72nd US Open | E79 King's Indian, Four Pawns Attack, Main line |
37. D R Jacobs vs W Martz |
| ½-½ | 23 | 1971 | 72nd US Open | B22 Sicilian, Alapin |
38. W Martz vs D Bicknell |
| ½-½ | 19 | 1971 | 72nd US Open | A34 English, Symmetrical |
39. L D Evans vs W Martz |
| 0-1 | 51 | 1971 | 72nd US Open | B42 Sicilian, Kan |
40. W Martz vs L Dubeck |
| ½-½ | 27 | 1971 | 72nd US Open | A16 English |
41. C Chellstorp vs W Martz |
| 1-0 | 37 | 1971 | 72nd US Open | D82 Grunfeld, 4.Bf4 |
42. W Martz vs P Quillen |
 | 1-0 | 23 | 1971 | 72nd US Open | A21 English |
43. E Friedman vs W Martz |
| ½-½ | 59 | 1971 | 72nd US Open | B94 Sicilian, Najdorf |
44. W Martz vs S Schwartz |
| ½-½ | 24 | 1971 | 72nd US Open | E78 King's Indian, Four Pawns Attack, with Be2 and Nf3 |
45. W Martz vs E Winslow |
| 0-1 | 39 | 1972 | North American op | A42 Modern Defense, Averbakh System |
46. J Cordovil vs W Martz |
| ½-½ | 29 | 1972 | Malaga | B03 Alekhine's Defense |
47. W Martz vs A Pomar |
| ½-½ | 20 | 1972 | Malaga | E25 Nimzo-Indian, Samisch |
48. P Brandts vs W Martz |
| ½-½ | 47 | 1972 | Lone Pine | E41 Nimzo-Indian |
49. W Martz vs L Christiansen |
| ½-½ | 29 | 1972 | Lone Pine | A22 English |
50. A Savage vs W Martz |
| 0-1 | 31 | 1972 | Lone Pine | B05 Alekhine's Defense, Modern |