Robinson, Billy D
Current rating: 1502
Record: 15-15
| Grand Prix Houston 2010 (extended) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 22 | Tortorici, Michael (1500) | Won 2-0 | +181534 |
| 2extended | 30 | Salinas, Merced (1518) | Won 2-1 | +171551 |
| 3extended | 36 | Kowal, Brian (1761) | Lost 1-2 | -141537 |
| 4extended | 187 | Khanin, Alex (1532) | Lost 0-2 | -181519 |
| 5extended | 188 | Aziz, Aras (1551) | Lost 1-2 | -171502 |
| top | average opponent: 1572record: 2-3 | new rating: 1502 | ||
| Grand Prix Oakland 2010 (extended) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 147 | Mcgourty, Sean (1500) | Lost 0-2 | -181495 |
| 2extended | 259 | Ellis, Jack (1482) | Won 2-1 | +181513 |
| 3extended | 186 | Hill, Mike (1446) | Won 2-0 | +171530 |
| 4extended | 232 | Loomis, Dallan (1632) | Lost 0-2 | -171513 |
| 5extended | 224 | Kanis, Jeroen (1679) | Won 2-1 | +211534 |
| 6extended | 190 | Field, Eric (1521) | Lost 1-2 | -181516 |
| 7extended | 181 | Kiesanowski, Cody (1501) | Won 2-0 | +181534 |
| 8extended | 140 | Draper, Benjamin V (1534) | Lost 0-2 | -181516 |
| top | average opponent: 1537record: 4-4 | new rating: 1516 | ||
| Grand Prix San Francisco 2007 (Time Spiral block) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 82 | Orellana, German (1500) | Won 1-0 | +181555 |
| 2block | 14 | Barreno, Marco A (1518) | Lost 0-1 | -191536 |
| 3block | 228 | Downey, Shane (1423) | Won 2-1 | +161552 |
| 4block | 134 | Sandler, Noah (1624) | Lost 1-2 | -171535 |
| 5block | 219 | Solari, Rafael (1482) | Lost 1-2 | -191516 |
| 6block | 208 | Pruess, David (1479) | Won 2-1 | +181534 |
| 7block | 151 | Heintz, Elliott (1476) | Lost 0-2 | -201514 |
| 8block | 137 | Gutierrez, Steven (1482) | Lost 0-2 | -181496 |
| 9block | 117 | Ferreri, Joe (1463) | Won 0-0 | +171513 |
| top | average opponent: 1494record: 4-5 | new rating: 1513 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 164 | Kerr, Robert C (1500) | Won 2-0 | +181518 |
| 2extended | 115 | Peel, Scott M (1500) | Lost 0-2 | -181500 |
| 3extended | 238 | Chodan, Ross (1551) | Won 0-0 | +191519 |
| 4extended | 227 | Heath, Christopher (1502) | Won 2-0 | +171536 |
| 5extended | 125 | Corley, Michael (1554) | Lost 0-2 | -171519 |
| 6extended | 168 | Mowrey, Austin (1522) | Won 2-0 | +181537 |
| 7extended | 80 | Nelson, Will (1564) | Won 2-1 | +181555 |
| 8extended | 51 | vick, jonathan (1557) | Lost 0-2 | -181537 |
| top | average opponent: 1531record: 5-3 | new rating: 1537 | ||