Tonkin, Jonathon D
Current rating: 1517
Record: 8-7-1
| Grand Prix Melbourne 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 260 | Yuksel, Yunus (1425) | Won 2-0 | +171517 |
| 2standard | 158 | Mostafa, wasif (1518) | Won 2-0 | +181535 |
| 3standard | 40 | Woudstra, Nicolas (1537) | Lost 1-2 | -181517 |
| 4standard | 161 | Baxter, Matthew (1524) | Lost 1-2 | -181499 |
| 5standard | 236 | Pelgrave, Stuart (1500) | Won 2-0 | +181517 |
| 6standard | 188 | Wood, Charles (1508) | Lost 0-2 | -181499 |
| 7standard | 209 | Cubit, Ryan (1503) | Won 2-1 | +181517 |
| 8standard | 152 | Yow, Jonathan (1539) | Lost 1-2 | -181499 |
| 9standard | 158 | Phillips, Rory (1460) | Won 2-0 | +181517 |
| average opponent: 1502record: 5-4 | new rating: 1517 | |||
| Grand Prix Auckland 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 84 | Lynch, Gary (1551) | Draw 1-1 | +11501 |
| 2standard | 61 | Hockey, Benjamin (1500) | Won 2-0 | +181519 |
| 3standard | 39 | Leppan Taylor, Orion (1519) | Won 2-1 | +181537 |
| 4standard | 39 | Mines, David (1535) | Lost 1-2 | -181519 |
| 5standard | 63 | Gehring, Chris (1499) | Won 2-0 | +181537 |
| 6standard | 41 | Xie, Ammy (1526) | Lost 0-1 | -191518 |
| 7standard | 60 | Aikman, Tane A (1517) | Lost 0-2 | -181500 |
| average opponent: 1521record: 3-3-1 | new rating: 1500 | |||