Barbieri, John
Current rating: 1500
Record: 6-6
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Gustafson, Peter (1482) | Won 2-0 | +181517 |
| 2sealed | 374 | Oliver, Tracy (1435) | Won 2-1 | +171534 |
| 3sealed | 236 | Andrup, Alex (1734) | Lost 1-2 | -151519 |
| 4sealed | 226 | Tam, Allen (1523) | Lost 1-2 | -181501 |
| 5sealed | 524 | Bartholow, Tim (1475) | Won 2-0 | +181519 |
| 6sealed | 301 | McGraw, Matthew (1456) | Lost 1-2 | -191500 |
| average opponent: 1518record: 3-3 | new rating: 1500 | |||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 181 | Clark, Timothy (1500) | Won 2-0 | +181518 |
| 2sealed | 154 | Domlack, Jeremy A (1500) | Lost 1-2 | -181500 |
| 3sealed | 232 | Brown, Nate (1500) | Lost 1-2 | -181482 |
| 4sealed | 290 | Bottcher, Chris (1483) | Won 2-0 | +181500 |
| 5sealed | 169 | Feeley, Sam (1487) | Won 2-1 | +171517 |
| 6sealed | 150 | Stechler, Kevin (1518) | Lost 1-2 | -181499 |
| average opponent: 1498record: 3-3 | new rating: 1499 | |||