Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. A Clark vs J McCormick |
| 0-1 | 27 | 1954 | Washington State Closed Championship | E01 Catalan, Closed |
2. V Pupols vs J McCormick |
| 1-0 | 37 | 1954 | Washington State Junior Championship play-off | C87 Ruy Lopez |
3. Gordon Cornelius vs J McCormick |
| 1-0 | 38 | 1956 | Inland Empire Open | A04 Reti Opening |
4. J McCormick vs O Ulvestad |
| 1-0 | 26 | 1956 | Oregon Open | D02 Queen's Pawn Game |
5. J McCormick vs V Pupols |
| 0-1 | 44 | 1956 | Seattle Open | E70 King's Indian |
6. B Greenwald vs J McCormick |
| 1-0 | 39 | 1958 | Idaho Open | B76 Sicilian, Dragon, Yugoslav Attack |
7. J McCormick vs G Buckendorf |
| 1-0 | 23 | 1958 | Idaho Open | A40 Queen's Pawn Game |
8. J McCormick vs E Macskasy |
 | 0-1 | 18 | 1960 | Washington-BC m | E78 King's Indian, Four Pawns Attack, with Be2 and Nf3 |
9. J McCormick vs J R Mortz |
| 1-0 | 19 | 1961 | 62nd US Open | D32 Queen's Gambit Declined, Tarrasch |
10. J McCormick vs T Weinberger |
| 1-0 | 25 | 1961 | 62nd US Open | A97 Dutch, Ilyin-Genevsky |
11. Z Kovacs vs J McCormick |
| 1-0 | 29 | 1961 | 62nd US Open | D28 Queen's Gambit Accepted, Classical |
12. J McCormick vs L Levy |
| ½-½ | 37 | 1961 | 62nd US Open | D50 Queen's Gambit Declined |
13. S Nadel vs J McCormick |
| 0-1 | 54 | 1963 | Washington State Championship | E20 Nimzo-Indian |
14. C A Rock vs J McCormick |
| 0-1 | 30 | 1963 | 64th US Open | E20 Nimzo-Indian |
15. J McCormick vs Gligoric |
| 0-1 | 29 | 1963 | 64th US Open | D82 Grunfeld, 4.Bf4 |
16. J McCormick vs Lombardy |
| ½-½ | 24 | 1963 | 64th US Open | B92 Sicilian, Najdorf, Opocensky Variation |
17. C Aykroyd vs J McCormick |
 | 1-0 | 25 | 1965 | Central Washington Open | B89 Sicilian |
18. Suttles vs J McCormick |
 | 1-0 | 16 | 1966 | Seattle ch-WA | B25 Sicilian, Closed |
19. J McCormick vs R Holzinger |
| 0-1 | 43 | 1966 | 67th US Open | A16 English |
20. J McCormick vs E Macskasy |
| ½-½ | 32 | 1966 | 67th US Open | B09 Pirc, Austrian Attack |
21. A Bisguier vs J McCormick |
| ½-½ | 28 | 1966 | 67th US Open | D60 Queen's Gambit Declined, Orthodox Defense |
22. Browne vs J McCormick |
| ½-½ | 50 | 1970 | 6th American Open | B40 Sicilian |
23. Evans vs J McCormick |
 | 0-1 | 76 | 1971 | Lone Pine | A01 Nimzovich-Larsen Attack |
24. J McCormick vs S Rubin |
| 1-0 | 31 | 1971 | Lone Pine | E18 Queen's Indian, Old Main line, 7.Nc3 |
25. J McCormick vs P Shuey |
 | 1-0 | 65 | 1971 | Lone Pine | B02 Alekhine's Defense |