| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. K Commons vs P Velikov |
| 1-0 | 48 | 1972 | World Student Team Championship Final-A | A40 Queen's Pawn Game |
| 27. A Mengarini vs K Commons |
| ½-½ | 30 | 1973 | Lone Pine | C00 French Defense |
| 28. C Chellstorp vs K Commons |
| ½-½ | 33 | 1973 | Norristown | C00 French Defense |
| 29. Parma vs K Commons |
| ½-½ | 24 | 1973 | Norristown | B83 Sicilian |
| 30. K Commons vs Pilnik |
| 0-1 | 42 | 1973 | Norristown | A65 Benoni, 6.e4 |
| 31. E Mednis vs K Commons |
| 0-1 | 59 | 1973 | Norristown | B08 Pirc, Classical |
| 32. K Commons vs C Uzman |
| 1-0 | 51 | 1973 | Norristown | A04 Reti Opening |
| 33. K Commons vs A Soltis |
| ½-½ | 21 | 1973 | Norristown | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 34. K Commons vs P Biyiasas |
| 0-1 | 41 | 1973 | Norristown | A40 Queen's Pawn Game |
| 35. K Commons vs W Martz |
| 0-1 | 62 | 1973 | Norristown | D72 Neo-Grunfeld, 5.cd, Main line |
| 36. K Rogoff vs K Commons |
| ½-½ | 22 | 1973 | Norristown | B40 Sicilian |
| 37. A Bisguier vs K Commons |
| ½-½ | 37 | 1973 | Norristown | B21 Sicilian, 2.f4 and 2.d4 |
| 38. K Commons vs E Paoli |
| 1-0 | 36 | 1973 | Norristown | D18 Queen's Gambit Declined Slav, Dutch |
| 39. C Chellstorp vs K Commons |
| 1-0 | 25 | 1973 | 74th US Open | E64 King's Indian, Fianchetto, Yugoslav System |
| 40. E Bradbury vs K Commons |
| 0-1 | 45 | 1973 | 74th US Open | B28 Sicilian, O'Kelly Variation |
| 41. K Commons vs R Karch |
 | 1-0 | 56 | 1973 | 74th US Open | C24 Bishop's Opening |
| 42. J J Pyne vs K Commons |
| 0-1 | 18 | 1973 | 74th US Open | B43 Sicilian, Kan, 5.Nc3 |
| 43. K Commons vs K Frey Beckman |
| 1-0 | 32 | 1973 | 74th US Open | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 44. K Commons vs G DeFotis |
| ½-½ | 51 | 1973 | 74th US Open | A04 Reti Opening |
| 45. R Rodriguez vs K Commons |
| 1-0 | 46 | 1973 | 74th US Open | B41 Sicilian, Kan |
| 46. A Karklins vs K Commons |
| ½-½ | 53 | 1973 | Chicago USCF International | C71 Ruy Lopez |
| 47. K Commons vs A Soltis |
| 0-1 | 33 | 1973 | Chicago USCF International | E70 King's Indian |
| 48. N Karaklajic vs K Commons |
| ½-½ | 48 | 1973 | Chicago USCF International | C50 Giuoco Piano |
| 49. K Commons vs Z Vranesic |
| 1-0 | 30 | 1973 | Chicago USCF International | B13 Caro-Kann, Exchange |
| 50. Suttles vs K Commons |
| 0-1 | 32 | 1973 | Chicago USCF International | A07 King's Indian Attack |
Kibitzing
