Cox, Guido
Current rating: 1444
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 213 | Feldman, Samuel (1645) | Won 2-1 | +221433 |
| 2sealed | 245 | Musmacher, Thomas (1784) | Won 2-0 | +241457 |
| 3sealed | 52 | Goddard, Sean (1603) | Won 2-0 | +211478 |
| 4sealed | 1 | Shashov, Alexey (1925) | Lost 1-2 | -101468 |
| 5sealed | 268 | Li, Sean (1731) | Won 2-0 | +221490 |
| 6sealed | 96 | Freis, Matthias (1617) | Lost 1-2 | -151475 |
| 7sealed | 143 | Wickham, Charles (1666) | Lost 1-2 | -151460 |
| 8sealed | 345 | Pronik, Dmitrii (1585) | Lost 0-2 | -161444 |
| top | average opponent: 1694record: 4-4 | new rating: 1444 | ||
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 135 | Edin, Bjorn Christian (1500) | Lost 0-0 | -171430 |
| 2standard | 494 | Nunes Casal, Toni (1454) | Draw 0-0 | 01430 |
| 3standard | 809 | Dixmeras, Vincent (1386) | Lost 0-2 | -191411 |
| top | average opponent: 1447record: 0-2-1 | new rating: 1411 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2293 | Finelli, Bernardo (1500) | Lost 0-2 | -181482 |
| 2sealed | 2311 | Serrano, Denis (1482) | Lost 0-2 | -181464 |
| 3sealed | 2461 | Lege, Karsten (1492) | Lost 0-2 | -171447 |
| top | average opponent: 1492record: 0-3 | new rating: 1447 | ||