Bost, Jonathon
Current rating: 1423
Record: 3-8
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Vo, David (1457) | Won 2-0 | +191429 |
| 2sealed | 389 | Honigmann, Joshua (1549) | Lost 0-2 | -161413 |
| 3sealed | 667 | McIntosh, Joe (1499) | Won 2-0 | +201433 |
| 4sealed | 577 | Dickenson, William (1517) | Won 2-1 | +191452 |
| 5sealed | 249 | Sun, Bo (1741) | Lost 0-2 | -131439 |
| 6sealed | 343 | Armstrong, Ryan (1525) | Lost 1-2 | -161423 |
| average opponent: 1548record: 3-3 | new rating: 1423 | |||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 177 | Arab, Justin (1500) | Lost 0-2 | -181482 |
| 2sealed | 173 | Olmo, Daniel (1510) | Lost 0-2 | -171465 |
| 3sealed | 213 | Hedge, David (1464) | Lost 0-2 | -181447 |
| 4sealed | 212 | Yamada, Shunsuke (1382) | Lost 1-2 | -201427 |
| 5sealed | 176 | Rice, Kevin (1466) | Lost 0-2 | -171410 |
| average opponent: 1464record: 0-5 | new rating: 1410 | |||