Kosciusko, David
Current rating: 1606
Record: 13-7
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1637 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 460 | Montgomery, Connor (1500) | Won 2-0 | +161653 |
| 2standard | 31 | Henderson II, LaVance (1556) | Lost 1-2 | -201633 |
| 3standard | 516 | McDonald, Shawn (1427) | Lost 1-2 | -221611 |
| 4standard | 649 | Stewart, Jack (1448) | Won 2-1 | +151626 |
| 5standard | 525 | Griffith, Maitland (1487) | Lost 0-2 | -201606 |
| average opponent: 1484record: 2-3 | new rating: 1606 | |||
| Grand Prix Providence 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 317 | Lee, Bill (1500) | Won 2-0 | +181518 |
| 2standard | 164 | Cesarano, Alexster (1518) | Won 2-0 | +181536 |
| 3standard | 191 | Goodwin, Adam (1500) | Lost 0-2 | -191517 |
| 4standard | 146 | Carroll, Charles (1502) | Won 2-1 | +181535 |
| 5standard | 102 | Ailes, Nicholas (1528) | Won 2-1 | +181553 |
| 6standard | 59 | Sokol, Mason (1699) | Won 2-1 | +211574 |
| 7standard | 83 | Rodriguez, Miles (1528) | Won 2-0 | +171591 |
| 8standard | 32 | Haass, David (1627) | Won 2-0 | +181609 |
| 9standard | 11 | DiCara, Mike (1706) | Lost 0-0 | -161593 |
| 10standard | 405 | Jolin, Gregory (1765) | Won 2-1 | +211614 |
| 11standard | 418 | Saunders, Peter (1723) | Won 2-1 | +201634 |
| 12standard | 399 | Laing, Alexander (1629) | Won 2-1 | +181652 |
| 13standard | 392 | Tumavitch, Matt (1584) | Won 2-0 | +171669 |
| 14standard | 389 | Sacks, Neal (1862) | Lost 1-2 | -151654 |
| 15standard | 395 | Morse, Sean (1687) | Lost 0-1 | -171637 |
| average opponent: 1624record: 11-4 | new rating: 1637 | |||