| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. E Formanek vs Joe Steffen |
| 1-0 | 35 | 1968 | 69th US Open | C04 French, Tarrasch, Guimard Main line |
| 27. E Winslow vs E Formanek |
| ½-½ | 43 | 1968 | 69th US Open | A56 Benoni Defense |
| 28. E Formanek vs C Bassin |
| 1-0 | 18 | 1968 | 69th US Open | C84 Ruy Lopez, Closed |
| 29. Jack Gibson vs E Formanek |
| ½-½ | 51 | 1968 | 69th US Open | A01 Nimzovich-Larsen Attack |
| 30. E Formanek vs W Cornwall |
| 1-0 | 29 | 1968 | 69th US Open | B06 Robatsch |
| 31. A Deutsch vs E Formanek |
| 0-1 | 38 | 1968 | 69th US Open | C34 King's Gambit Accepted |
| 32. E Formanek vs N Weinstein |
| ½-½ | 20 | 1968 | 69th US Open | B36 Sicilian, Accelerated Fianchetto |
| 33. C Henin vs E Formanek |
| 0-1 | 49 | 1968 | 69th US Open | A06 Reti Opening |
| 34. E Formanek vs J Sherwin |
| 0-1 | 37 | 1968 | 69th US Open | B94 Sicilian, Najdorf |
| 35. P Brandts vs E Formanek |
| 1-0 | 34 | 1968 | 69th US Open | D25 Queen's Gambit Accepted |
| 36. E Formanek vs N Wood |
| 1-0 | 19 | 1968 | 69th US Open | C02 French, Advance |
| 37. W A Bills vs E Formanek |
| 0-1 | 38 | 1968 | 69th US Open | C16 French, Winawer |
| 38. Popovych vs E Formanek |
 | 1-0 | 35 | 1969 | New York | C18 French, Winawer |
| 39. E Formanek vs P Karmaz |
| 0-1 | 35 | 1969 | Whitby | A87 Dutch, Leningrad, Main Variation |
| 40. R Byrne vs E Formanek |
| 1-0 | 54 | 1969 | Continental Open | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 41. E Formanek vs Browne |
| 1-0 | 48 | 1970 | Atlantic City | A59 Benko Gambit |
| 42. E Formanek vs D Oshana |
| 0-1 | 19 | 1970 | Wamsley Tournament | D09 Queen's Gambit Declined, Albin Counter Gambit, 5.g3 |
| 43. Kavalek vs E Formanek |
| 1-0 | 32 | 1970 | 71st US Open | C19 French, Winawer, Advance |
| 44. L Day vs E Formanek |
| 1-0 | 42 | 1971 | Carleton Open | B02 Alekhine's Defense |
| 45. B Harper vs E Formanek |
| 0-1 | 39 | 1971 | 9th Canadian Open | A21 English |
| 46. E Formanek vs Z Vranesic |
| ½-½ | 83 | 1971 | 9th Canadian Open | B43 Sicilian, Kan, 5.Nc3 |
| 47. Browne vs E Formanek |
| 0-1 | 52 | 1971 | 9th Canadian Open | C00 French Defense |
| 48. E Formanek vs Kuprejanov |
| 0-1 | 45 | 1971 | 9th Canadian Open | D97 Grunfeld, Russian |
| 49. M Franett vs E Formanek |
| 0-1 | 29 | 1971 | 9th Canadian Open | A58 Benko Gambit |
| 50. E Formanek vs Kavalek |
| 1-0 | 47 | 1971 | 9th Canadian Open | B93 Sicilian, Najdorf, 6.f4 |
Kibitzing
