Chapin, Robert
Current rating: 1401
Record: 4-10
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 138 | Weber, Nikolas (1500) | Lost 1-2 | -171429 |
| 2sealed | 351 | Teller, Darrik (1450) | Won 2-1 | +191448 |
| 3sealed | 381 | Villela, Artur (1858) | Lost 0-2 | -111437 |
| 4sealed | 462 | Alvarenga, Gustavo (1480) | Lost 0-2 | -171420 |
| 5sealed | 408 | Rotenberger, Jason (1377) | Lost 0-2 | -191401 |
| average opponent: 1533record: 1-4 | new rating: 1401 | |||
| Grand Prix Columbus 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 199 | lyon, nathan (1500) | Lost 0-2 | -181482 |
| 2sealed | 265 | Myers, Jason (1481) | Won 2-1 | +181500 |
| 3sealed | 230 | Brankatelli, Matthew (1502) | Lost 0-2 | -181482 |
| 4sealed | 285 | Perlas, Carlo (1482) | Lost 0-2 | -181464 |
| 5sealed | 288 | Stachurski, Richard (1463) | Lost 0-2 | -181446 |
| 6sealed | 258 | Falk, Karl (1447) | Won 2-1 | +181464 |
| 7sealed | 197 | Good, Kenny (1463) | Lost 1-2 | -181446 |
| 8sealed | 172 | Weisenberger, Richard (1410) | Won 2-0 | +171463 |
| 9sealed | 134 | Vlahovich, Dan (1522) | Lost 0-2 | -171446 |
| average opponent: 1475record: 3-6 | new rating: 1446 | |||