Ridenour, Justin A
Current rating: 1540
Record: 5-3
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 585 | Halley, Chris (1500) | Won 2-1 | +181518 |
| 2sealed | 436 | Doshi, Vishvas (1616) | Lost 0-2 | -161502 |
| 3sealed | 598 | Gareau, Philippe (1487) | Lost 1-2 | -181484 |
| 4sealed | 656 | Kilgore, Tyler (1443) | Won 2-0 | +171501 |
| 5sealed | 610 | Doran, Shaun (1744) | Won 2-0 | +221523 |
| 6sealed | 512 | Landale, Tim (1642) | Won 2-0 | +201543 |
| 7sealed | 477 | Yong, Peter (1424) | Won 2-0 | +161559 |
| 8sealed | 469 | Senneway, Bill (1506) | Lost 1-2 | -191540 |
| average opponent: 1545record: 5-3 | new rating: 1540 | |||