| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K Rathnakaran vs P Mohajerin |
| 1-0 | 40 |
2001 |
Asian U20 | A04 Reti Opening |
| 2. K Rathnakaran vs B Takyrbashev |
| 1-0 | 41 |
2001 |
Asian U20 | B06 Robatsch |
| 3. K Rathnakaran vs Harikrishna |
| ½-½ | 35 |
2001 |
Asian U20 | B33 Sicilian |
| 4. J Markos vs K Rathnakaran |
| 1-0 | 26 |
2001 |
WJun | A67 Benoni, Taimanov Variation |
| 5. R Abbasi vs K Rathnakaran |
| 0-1 | 57 |
2001 |
Asian U20 | C05 French, Tarrasch |
| 6. E Moradiabadi vs K Rathnakaran |
| 0-1 | 35 |
2001 |
Asian U20 | A70 Benoni, Classical with 7.Nf3 |
| 7. L Vajda vs K Rathnakaran |
| 1-0 | 50 |
2001 |
WJun | C05 French, Tarrasch |
| 8. K Rathnakaran vs A Schenk |
| 0-1 | 40 |
2001 |
WJun | C00 French Defense |
| 9. K Rathnakaran vs S Mousavian |
| 0-1 | 89 |
2001 |
Asian U20 | C00 French Defense |
| 10. K Rathnakaran vs E Ghaem Maghami |
| ½-½ | 42 |
2001 |
Asian U20 | B28 Sicilian, O'Kelly Variation |
| 11. M Al Sayed vs K Rathnakaran |
| 0-1 | 66 |
2001 |
Asian U20 | C11 French |
| 12. J Berkvens vs K Rathnakaran |
| ½-½ | 54 |
2001 |
WJun | A67 Benoni, Taimanov Variation |
| 13. M R Venkatesh vs K Rathnakaran |
| 1-0 | 49 |
2001 |
Asian U20 | A05 Reti Opening |
| 14. B Al Qudaimi vs K Rathnakaran |
| 0-1 | 43 |
2001 |
Asian U20 | C05 French, Tarrasch |
| 15. K Rathnakaran vs Nguyen Thanh Son |
| ½-½ | 59 |
2001 |
Asian U20 | C47 Four Knights |
| 16. D Mastrovasilis vs K Rathnakaran |
| 1-0 | 37 |
2001 |
WJun | C11 French |
| 17. C Deepan vs K Rathnakaran |
 | 1-0 | 28 |
2004 |
Piloo Mody Open | C05 French, Tarrasch |
| 18. K Rathnakaran vs D Sharma |
| ½-½ | 36 |
2004 |
Piloo Mody Open | C54 Giuoco Piano |
| 19. K Rathnakaran vs Barsov |
| 0-1 | 30 |
2004 |
Pune op | C00 French Defense |
| 20. K Rathnakaran vs S Prathamesh |
| 0-1 | 32 |
2004 |
Piloo Mody Open | A04 Reti Opening |
| 21. R Singh vs K Rathnakaran |
| 1-0 | 41 |
2006 |
4 th Parsvnath Intl Chess Tmt - | A26 English |
| 22. K Rathnakaran vs N Ibraev |
| ½-½ | 27 |
2006 |
4 th Parsvnath Intl Chess Tmt - | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 23. K Rathnakaran vs Ramesh |
| ½-½ | 14 |
2006 |
4th Parsvnath Intl Tmt , | B56 Sicilian |