Jakobsen, Jon
Current rating: 1519
Record: 5-4
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 301 | Sampaolesi, Bernardo (1500) | Lost 1-2 | -181482 |
| 2sealed | 510 | Larsen, Martin (1483) | Won 2-0 | +181500 |
| 3sealed | 505 | Round, Thomas (1499) | Won 2-1 | +181518 |
| 4sealed | 284 | Breit, Bernhard (1762) | Won 2-0 | +221540 |
| 5sealed | 238 | Lemaitre, Francois (1514) | Lost 1-2 | -181522 |
| 6sealed | 310 | De Smet, Anton (1374) | Won 2-0 | +151537 |
| 7sealed | 380 | Carlsson, Kevin (1535) | Lost 1-2 | -181519 |
| 8sealed | 330 | Wrzesinski, Piotr (1512) | Won 2-0 | +181537 |
| 9sealed | 8 | Uy, Kris Daphne (1544) | Lost 1-2 | -181519 |
| average opponent: 1525record: 5-4 | new rating: 1519 | |||