Bosma, Mark
Current rating: 1409
Record: 2-7-1
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Van Maaren, Thijs (1500) | Lost 1-2 | -171462 |
| 2sealed | 385 | Novak, Radek (1503) | Lost 1-2 | -181444 |
| 3sealed | 667 | Zwaan, Jelle (1464) | Lost 0-2 | -171427 |
| 4sealed | 617 | Van Driel, Xem (1449) | Lost 0-2 | -181409 |
| average opponent: 1479record: 0-4 | new rating: 1409 | |||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 425 | Beed, Zach (1500) | Draw 1-1 | 01500 |
| 2standard | 369 | Pohl, Kajetan (1500) | Won 2-1 | +181518 |
| 3standard | 297 | Tsong, Wilson (1518) | Won 2-1 | +181536 |
| 4standard | 160 | Vacher, Stephane (1384) | Lost 0-2 | -211515 |
| 5standard | 309 | Reterink, Henri (1516) | Lost 1-2 | -181497 |
| 6standard | 440 | Hong, Sung-Il (1498) | Lost 0-2 | -181479 |
| average opponent: 1486record: 2-3-1 | new rating: 1479 | |||