| 1390.6 | 1418.7 | 20 | 20 | Paterson, J (Jonny) | | WCT | 1308.4 | 1328.2 | Cape Town Chess Club Club Championship 2018 (Championship) | 2 | 2008-05-15 | S | B | 1 | 0.55 | 0.45 | 8.5 | 0.56 | 0.44 | 8.8 |
| 1326 | 1330.9 | 20 | 20 | Paterson, J (Jonny) | | WCT | 1228 | 1230.4 | 2018 WP Schools Closed Trials (U15 Boys) | 6 | 2018-03-10 | S | B | 0 | 0.57 | -0.57 | -9.5 | 0.58 | -0.58 | -11.6 |
| 1296.7 | 1302.6 | 20 | 20 | Paterson, J (Jonny) | | WCT | 1221.4 | 1221.4 | 2018 Central District Trials (U15) | 4 | 2018-02-03 | S | W | 1 | 0.63 | 0.37 | 6.1 | 0.64 | 0.36 | 7.2 |
| 1324 | 1324 | 20 | 20 | Paterson, J (Jonny) | | WP | 1174 | 1174 | Wp Schools Closed 2017 (U15 Boys) | 4 | 2017-03-11 | S | W | 1 | 0.7 | 0.3 | 5 | 0.3 | 0.7 | 14 |
| 1286 | 1286 | 20 | 20 | Paterson, J (Jonny) | | WP | 1179 | 1179 | Mackie Memorial Chess Tournament 2016 (Prestige) | 5 | 2016-10-09 | S | W | 1 | 0.65 | 0.35 | 7 | 0.35 | 0.65 | 13 |
| 1209 | 1209 | 20 | 20 | Paterson, J (Jonny) | | WP | 1093 | 1093 | South African Open 2015 (B) | 11 | 2015-07-11 | S | W | 0 | 0.66 | -0.66 | -13.2 | -0.66 | 0.66 | 13.2 |
| 1187 | 1187 | 20 | 20 | Paterson, J (Jonny) | | WP | 1067 | 1067 | Wp Schools Closed 2015 (U13 Boys) | 2 | 2015-03-06 | S | W | 0 | 0.66 | -0.66 | -11 | -0.66 | 0.66 | 13.2 |
| 1148 | 1148 | 20 | 20 | Paterson, J (Jonny) | | WP | 938 | 938 | Western Province Closed 2014 (E) | 5 | 2014-08-09 | S | B | 0 | 0.77 | -0.77 | -14.5 | -0.77 | 0.77 | 15.4 |
| 1126 | 1126 | 20 | 20 | Paterson, J (Jonny) | | WP | 908 | 908 | Wp Individual Championships (Under 12 Boys) | 2 | 2014-03-28 | S | W | 1 | 0.78 | 0.22 | 3.7 | 0.22 | 0.78 | 15.6 |
| 1126 | 1126 | 20 | 20 | Paterson, J (Jonny) | | WP | 908 | 908 | Western Province Open 2014 (B-Section) | 5 | 2014-03-09 | S | B | 0 | 0.78 | -0.78 | -13.6 | -0.78 | 0.78 | 15.6 |
| 1158 | 1158 | 20 | 20 | Paterson, J (Jonny) | | WP | 883 | 883 | Wild Card Championships 2013 (U12 Boys) | 3 | 2013-12-20 | S | W | 1 | 0.83 | 0.17 | 3.2 | 0.17 | 0.83 | 16.6 |
