| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Gross vs Tarjan |
| ½-½ | 18 |
1968 |
USA op | E17 Queen's Indian |
| 2. Tarjan vs S Ivanov |
| ½-½ | 28 |
1969 |
WchT U26 fin-A 16th | C33 King's Gambit Accepted |
| 3. Tarjan vs C W Pritchett |
| ½-½ | 28 |
1969 |
WchT U26 qual-C | C33 King's Gambit Accepted |
| 4. Tarjan vs Browne |
 | ½-½ | 41 |
1969 |
USA Jch plof m | B23 Sicilian, Closed |
| 5. Browne vs Tarjan |
| ½-½ | 32 |
1969 |
USA-ch U18 playoff | C70 Ruy Lopez |
| 6. Tarjan vs Gligoric |
| ½-½ | 29 |
1972 |
Lone Pine | B50 Sicilian |
| 7. Tarjan vs Suba |
| ½-½ | 53 |
1972 |
Graz Stu tt | B04 Alekhine's Defense, Modern |
| 8. Tarjan vs D Cox |
| ½-½ | 39 |
1972 |
Norwich Junior | B81 Sicilian, Scheveningen, Keres Attack |
| 9. Tarjan vs T Bjerre |
| ½-½ | 19 |
1972 |
Graz tt final | B23 Sicilian, Closed |
| 10. Tarjan vs Saidy |
| ½-½ | 26 |
1972 |
Lone Pine | B06 Robatsch |
| 11. Anikaev vs Tarjan |
| ½-½ | 16 |
1972 |
Graz Stu tt | A61 Benoni |
| 12. C Brasket vs Tarjan |
| ½-½ | 65 |
1972 |
Lone Pine | A71 Benoni, Classical, 8.Bg5 |
| 13. D Waterman vs Tarjan |
| ½-½ | 31 |
1972 |
Lone Pine | B05 Alekhine's Defense, Modern |
| 14. D Byrne vs Tarjan |
| ½-½ | 72 |
1973 |
US Championship | A36 English |
| 15. J Grefe vs Tarjan |
 | ½-½ | 25 |
1973 |
US Championship | B77 Sicilian, Dragon, Yugoslav Attack |
| 16. W Martz vs Tarjan |
| ½-½ | 60 |
1973 |
US Championship | A31 English, Symmetrical, Benoni Formation |
| 17. G C De Fotis vs Tarjan |
| ½-½ | 30 |
1973 |
Chicago Int | A45 Queen's Pawn Game |
| 18. Tarjan vs Larry Evans |
| ½-½ | 62 |
1973 |
Lone Pine | B96 Sicilian, Najdorf |
| 19. Tarjan vs N Weinstein |
| ½-½ | 27 |
1973 |
Chicago | B82 Sicilian, Scheveningen |
| 20. Tarjan vs Browne |
| ½-½ | 89 |
1973 |
Lone Pine | B20 Sicilian |
| 21. Benko vs Tarjan |
| ½-½ | 31 |
1973 |
US Championship | B27 Sicilian |
| 22. Tarjan vs Browne |
| ½-½ | 30 |
1973 |
US Championship | B98 Sicilian, Najdorf |
| 23. G F Kane vs Tarjan |
| ½-½ | 15 |
1973 |
US Championship | A57 Benko Gambit |
| 24. Tarjan vs Kavalek |
| ½-½ | 40 |
1973 |
US Championship | A04 Reti Opening |
| 25. A Bachtiar vs Tarjan |
| ½-½ | 11 |
1974 |
Wijk aan Zee II | D78 Neo-Grunfeld, 6.O-O c6 |