Ronis, David
Current rating: 1486
Record: 6-7-1
| Grand Prix Detroit 2003 (Onslaught block) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 122 | Hessian, Chad m (1500) | Lost 1-2 | -181447 |
| 2block | 172 | Lippert, Ian (1482) | Draw 1-1 | +11448 |
| 3block | 221 | Cavender, Robert (1482) | Won 2-0 | +181466 |
| 4block | 193 | Reinhold, Steve (1478) | Won 2-0 | +191485 |
| 5block | 138 | Shah, Ty (1520) | Won 2-1 | +181503 |
| 6block | 91 | Kasper, Matthew (1503) | Lost 0-2 | -181485 |
| 7block | 119 | Ryder, Sean (1502) | Lost 0-2 | -171468 |
| 8block | 103 | Mayer, Randy (1498) | Won 2-1 | +181486 |
| average opponent: 1496record: 4-3-1 | new rating: 1486 | |||
| Grand Prix Detroit 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 165 | Hoffmann, Matthew (1547) | Lost 0-2 | -171483 |
| 2sealed | 231 | Fales, Paul (1482) | Won 2-0 | +181501 |
| 3sealed | 170 | Caudell, Chad (1481) | Lost 0-2 | -191482 |
| 4sealed | 239 | Donato, Tony (1483) | Won 2-0 | +191501 |
| 5sealed | 159 | Baumann, Kurtis (1501) | Lost 1-2 | -181483 |
| 6sealed | 158 | Kolp, Matt A (1484) | Lost 1-2 | -181465 |
| average opponent: 1496record: 2-4 | new rating: 1465 | |||