Bosco, Osvaldo
Current rating: 1464
Record: 2-4
| Grand Prix Buenos Aires 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 20 | Seijo, Osvaldo (1500) | Lost 0-2 | -181482 |
| 2extended | 85 | Perroni, Luis A (1482) | Won 2-1 | +181500 |
| 3extended | 109 | Bazzi, Ezequiel (1500) | Lost 0-2 | -181482 |
| 4extended | 125 | MATTEASSI, FEDERICO (1482) | Won 2-0 | +181500 |
| 5extended | 76 | Gonzalez, Adriano (1498) | Lost 1-2 | -181482 |
| 6extended | 114 | SERO, FEDERICO (1482) | Lost 0-2 | -181464 |
| average opponent: 1491record: 2-4 | new rating: 1464 | |||