Rittase, Billy
Current rating: 1600
Record: 13-8
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1648 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 998 | Aiken, Simone (1709) | Won 2-1 | +191667 |
| 2sealed | 581 | Norton, Simon (1518) | Lost 0-2 | -211646 |
| 3sealed | 1189 | Sheehan, Matt (1499) | Lost 1-2 | -201626 |
| 4sealed | 1103 | Filibeck, Keith (1483) | Won 2-0 | +151641 |
| 5sealed | 928 | Lacoste, Steven (1519) | Lost 1-2 | -201621 |
| 6sealed | 1095 | Ting, Josh (1482) | Lost 1-2 | -211600 |
| average opponent: 1535record: 2-4 | new rating: 1600 | |||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Doberstein, Matthew (1500) | Won 2-0 | +181518 |
| 2sealed | 263 | Garraud, Monique (1440) | Won 2-0 | +171535 |
| 3sealed | 210 | Johnson, Case (1585) | Lost 1-2 | -171518 |
| 4sealed | 532 | Johnson, Scott (1599) | Won 2-0 | +191537 |
| 5sealed | 367 | Eslami, Curtis (1616) | Won 2-1 | +191556 |
| 6sealed | 93 | Jeong, Galen (1555) | Won 2-0 | +181574 |
| 7sealed | 54 | Raval, Mahendra (1570) | Won 2-0 | +181592 |
| 8sealed | 74 | Oldaker, Matt (1664) | Won 2-1 | +201612 |
| 9sealed | 43 | Wadding, Edward (1567) | Lost 0-2 | -191593 |
| 10draft | 17 | Torres, Emilio (1580) | Won 2-0 | +181611 |
| 11draft | 48 | Wu, Timothy (2026) | Lost 0-2 | -111600 |
| 12draft | 73 | Malka, Sol (1872) | Won 2-1 | +231623 |
| 13draft | 94 | Simpson, Chad (1576) | Won 2-1 | +171640 |
| 14draft | 106 | Schneider, Travis (1781) | Won 2-0 | +201660 |
| 15draft | 16 | Kirkwood, Scott (1984) | Lost 1-2 | -121648 |
| average opponent: 1661record: 11-4 | new rating: 1648 | |||