Ribeiro, Joao
Current rating: 1446
Record: 2-5
| Grand Prix London 2013 (GTC limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 160 | Pinto, Antonio (1613) | Lost 0-2 | -161479 |
| 5sealed | 152 | Kleerekooper, Leonard (1594) | Lost 0-2 | -161463 |
| 6sealed | 523 | Moses, Asher (1518) | Lost 0-2 | -171446 |
| average opponent: 1575record: 0-3 | new rating: 1446 | |||
| Grand Prix Lisbon 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 18 | Amador, Agustin (1440) | Lost 1-2 | -191481 |
| 2sealed | 164 | Vilarigues, Eduardo (1482) | Won 2-0 | +181499 |
| 3sealed | 161 | Ludena, David (1449) | Lost 0-2 | -191480 |
| 4sealed | 233 | Sued, Nadya (1319) | Won 2-1 | +151495 |
| average opponent: 1422record: 2-2 | new rating: 1495 | |||