| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Sundararajan vs Aronian |
| 0-1 | 50 |
1999 |
Wch U20 | E38 Nimzo-Indian, Classical, 4...c5 |
| 2. Sundararajan vs A Deshmukh |
| 0-1 | 51 |
2000 |
Goodricke Open | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 3. Sundararajan vs E Vladimirov |
| ½-½ | 30 |
2000 |
Goodricke 11th op | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 4. Sundararajan vs Z Medvegy |
| ½-½ | 64 |
2001 |
FSGM August | E41 Nimzo-Indian |
| 5. Sundararajan vs M R Venkatesh |
| 0-1 | 51 |
2001 |
Asian U20 | E32 Nimzo-Indian, Classical |
| 6. Sundararajan vs N Das |
| ½-½ | 19 |
2002 |
41st World Junior Championships | E32 Nimzo-Indian, Classical |
| 7. Sundararajan vs M R Venkatesh |
| ½-½ | 15 |
2003 |
Indian Championships | E33 Nimzo-Indian, Classical |
| 8. Sundararajan vs T Bakre |
| ½-½ | 51 |
2003 |
Indian Championships | E32 Nimzo-Indian, Classical |
| 9. Sundararajan vs A Moiseenko |
| ½-½ | 21 |
2005 |
Canadian Open | E32 Nimzo-Indian, Classical |
| 10. Sundararajan vs A Villavicencio |
| ½-½ | 18 |
2006 |
XXIV Andorra Open | E35 Nimzo-Indian, Classical, Noa Variation, 5.cd ed |
| 11. Sundararajan vs M R Venkatesh |
| 0-1 | 39 |
2006 |
43rd Indian Championship | E28 Nimzo-Indian, Samisch Variation |