Rountree, Jack W
Current rating: 1523
Record: 7-6
| Grand Prix London 2015 (ORI standard) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 489 | Korczynska, Ewelina (1500) | Lost 1-2 | -191544 |
| 2standard | 850 | Osborn, Ross (1481) | Lost 0-1 | -191525 |
| 3standard | 1085 | Welsh, Kyle (1464) | Won 2-1 | +171542 |
| 4standard | 944 | Mcclelland, Craig C (1483) | Lost 0-2 | -191523 |
| average opponent: 1482record: 1-3 | new rating: 1523 | |||
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 661 | Styrke, Mikal (1443) | Won 2-0 | +171517 |
| 2sealed | 27 | Telford, Alex (1517) | Won 2-1 | +181535 |
| 3sealed | 7 | Pizzey, Lian (1722) | Won 2-0 | +211556 |
| 4sealed | 201 | Zlotoiabko, Boris (1698) | Won 2-1 | +211577 |
| 5sealed | 77 | Huang, Matej (1623) | Lost 0-2 | -171560 |
| 6sealed | 171 | Pasgaard, Alexander (1552) | Won 2-0 | +181578 |
| 7sealed | 46 | Carl, Christian (1583) | Lost 0-2 | -181560 |
| 8sealed | 114 | Hall, Andrew [ENG] (1567) | Won 2-0 | +181578 |
| 9sealed | 157 | Baker, Thomas D (1776) | Lost 0-2 | -151563 |
| average opponent: 1609record: 6-3 | new rating: 1563 | |||