Barbosa, Osvaldo
Current rating: 1519
Record: 4-3 (GP) / 8-10 (professional)
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 98 | Mauricio Camacho Pelle, (1518) | Lost 0-1 | -171484 |
| 3standard | 171 | Daniel Jose da Silva, (1500) | Won 2-0 | +181502 |
| 4standard | 185 | Luiz Botti, (1518) | Lost 1-2 | -181484 |
| 5standard | 204 | Lino, Fernando H (1465) | Won 2-1 | +181502 |
| 6standard | 135 | Roberto Bueno Fistarol, (1517) | Won 0-0 | +181520 |
| 7standard | 126 | Thiago Oliveira Lemos, (1535) | Won 2-0 | +191539 |
| 8standard | 71 | Barzola, Juan Pablo (1458) | Lost 0-2 | -201519 |
| average opponent: 1502record: 4-3 | new rating: 1519 | |||
| 2004 World Championship (mixed) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 25 | Coeckelbergh, Gert (1928) | Won 2-1 | +251525 |
| 2standard | 67 | Dong, Zhong (1598) | Lost 0-2 | -161509 |
| 3standard | 66 | Borys, Grzegorz (1584) | Won 2-0 | +191528 |
| 4standard | 58 | Cec, Filip (1536) | Won 2-0 | +181546 |
| 5standard | 37 | Edel, Willy (1529) | Won 2-1 | +181564 |
| 6standard | 12 | Ikeda, Tsuyoshi (1909) | Lost 0-2 | -121552 |
| 7draft | 104 | Zink, Daniel (1975) | Lost 0-2 | -111541 |
| 8draft | 140 | Castro, Rodrigo Cesar (1619) | Won 2-1 | +201561 |
| 9draft | 113 | Lehtinen, Max (1559) | Won 2-1 | +181579 |
| 10draft | 120 | Nam, Kyoung Geun (1580) | Lost 1-2 | -181561 |
| 11draft | 80 | Rivera, Mark Gerard (1573) | Lost 0-2 | -181543 |
| 12draft | 43 | Maia, Dinis (1474) | Lost 0-2 | -191524 |
| 13block | 78 | Jonsson, Anton (2003) | Lost 1-2 | -101514 |
| 14block | 81 | Chapman, David (1480) | Lost 0-2 | -191495 |
| 15block | 94 | Pascoli, Mario (1771) | Lost 1-2 | -131482 |
| 16block | 104 | Radin, Aleksandar (1476) | Won 2-0 | +181500 |
| 17block | 91 | White, James T (1585) | Won 2-0 | +191519 |
| 18block | 78 | Markovsky, Greg (1518) | Lost 0-2 | -181501 |
| average opponent: 1650record: 8-10 | new rating: 1501 | |||