| 1410.3 | 1405.5 | 20 | 20 | Modi, S (Sonia) | WCM | GJM | 1588.3 | 1585.4 | 2019 South African Junior Closed Chess Championship (U16 Girls) | 8 | 2019-03-21 | S | B | 0 | 0.25 | -0.25 | -5 | 0.25 | -0.25 | -5 |
| 1340.7 | 1342.1 | 20 | 20 | Modi, S (Sonia) | WCM | GJM | 1669.7 | 1671.7 | JNW Club - Maragon Open 2018 (A) | 4 | 2018-08-04 | S | W | 0 | 0.16 | -0.16 | -2.7 | 0.16 | -0.16 | -3.2 |
| 1342 | 1343.2 | 20 | 20 | Modi, S (Sonia) | WCM | GJM | 1745.9 | 1747.7 | 2018 South African Junior Closed Chess Championships (U16 Girls) | 7 | 2018-04-05 | S | W | 0 | 0.07 | -0.07 | -1.4 | 0.07 | -0.07 | -1.4 |
| 1203 | 1203 | 20 | 20 | Modi, S (Sonia) | WCM | GJM | 1466 | 1466 | Sa Junior Closed Chess Championship 2015 (Under 12 Girls) | 5 | 2015-04-07 | S | B | 0 | 0.18 | -0.18 | -3.6 | -0.18 | 0.18 | 3.6 |
| 1089 | 1089 | 20 | 20 | Modi, S (Sonia) | | GJM | 1198 | 1198 | Sa School Individual Chess Championship 2014 U11 G | 3 | 2014-07-11 | S | W | 0 | 0.35 | -0.35 | -6.6 | -0.35 | 0.35 | 7 |
| 1019 | 1019 | 20 | 20 | Modi, S (Sonia) | | GJM | 1227 | 1227 | South African Junior Closed 2014 U12 Girls | 4 | 2014-04-01 | S | B | 0 | 0.23 | -0.23 | -4.6 | -0.23 | 0.23 | 4.6 |
| 1182 | 1182 | 20 | 20 | Modi, S (Sonia) | | GJM | 1278 | 1278 | Chessexcellence October Round Robin D (D) | 1 | 2013-10-26 | S | W | 1 | 0.37 | 0.63 | 10.5 | 0.63 | 0.37 | 7.4 |
| 1200 | 1200 | 20 | 20 | Modi, S (Sonia) | | GJM | 1185 | 1185 | African Youth Chess Championships 2013 U10 Girls | 5 | 2013-10-12 | S | B | 0 | 0.52 | -0.52 | -10.4 | -0.52 | 0.52 | 10.4 |
| 1166 | 1166 | 20 | 20 | Modi, S (Sonia) | | GJM | 1181 | 1181 | Womens Open Chess Festival A Section | 7 | 2013-08-10 | S | W | 1 | 0.48 | 0.52 | 9.8 | 0.52 | 0.48 | 9.6 |
| 1200 | 1200 | 20 | 20 | Modi, S (Sonia) | | GW | 1034 | 1034 | South African Junior Closed 2013 U10 Girls | 5 | 2013-04-04 | S | B | 0 | 0.72 | -0.72 | -14.4 | -0.72 | 0.72 | 14.4 |
| 1196 | 1196 | 20 | 20 | Modi, S (Sonia) | | GW | 993 | 993 | Chris Greyling 2013 Section B | 3 | 2013-03-16 | S | B | 1 | 0.76 | 0.24 | 4 | 0.24 | 0.76 | 15.2 |
| 1131 | 1131 | 20 | 20 | Modi, S (Sonia) | | GW | 1051 | 1051 | Gauteng West Trials 2 - Under 10 | 6 | 2012-08-18 | S | B | 0.5 | 0.61 | -0.11 | -1.8 | -0.11 | 0.61 | 12.2 |