Gerbic, Joey
Current rating: 1403
Record: 1-7-1
| Grand Prix Detroit 2013 (modern) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 106 | Lambert, Justin (1500) | Lost 0-2 | -171413 |
| 2modern | 448 | York, Thomas l (1500) | Lost 0-0 | -161397 |
| 3modern | 658 | Robinson, Adam (1633) | Lost 0-2 | -141383 |
| 4modern | 692 | Sears, Ryan (1445) | Won 2-1 | +191402 |
| 5modern | 629 | wilson, gregory m (1462) | Draw 1-1 | +11403 |
| average opponent: 1508record: 1-3-1 | new rating: 1403 | |||
| Grand Prix Indianapolis 2013 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 67 | Eddleman, Steve O (1500) | Lost 0-2 | -181482 |
| 2sealed | 259 | Tidd, Mark (1542) | Lost 1-2 | -171465 |
| 3sealed | 334 | Webster, Billy (1520) | Lost 0-2 | -171448 |
| 4sealed | 367 | Wintervold, Lee (1445) | Lost 0-2 | -181430 |
| average opponent: 1502record: 0-4 | new rating: 1430 | |||