Porter, Donald
Current rating: 1519
Record: 16-15-2
| Grand Prix Columbus 2019 (modern) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 7 | Manger, Bryan (1500) | Won 2-1 | +181496 |
| 2modern | 40 | Legg, Patrick (1518) | Lost 0-2 | -171479 |
| 3modern | 236 | Mckinnon-Duggins, Ben (1488) | Won 2-0 | +181497 |
| 4modern | 129 | Grode, Mason (1538) | Won 2-1 | +191516 |
| 5modern | 98 | Ryan II, Kenneth (1754) | Lost 0-2 | -141502 |
| 6modern | 158 | Kurty, Nathaniel (1491) | Lost 1-2 | -181484 |
| 7modern | 154 | Vitello, Dominic (1486) | Won 2-0 | +181502 |
| 8modern | 114 | Tilenius, Liam (1453) | Won 2-0 | +171519 |
| top | average opponent: 1529record: 5-3 | new rating: 1519 | ||
| Grand Prix Pittsburgh 2016 (SOI standard) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 136 | Molocea, Cassandra (1500) | Won 2-1 | +171555 |
| 2standard | 27 | Byerly, Larry (1535) | Won 2-1 | +181573 |
| 3standard | 336 | Deerwester, Isaac (1617) | Lost 0-2 | -181555 |
| 4standard | 408 | Cook, Scott (1525) | Lost 0-2 | -181537 |
| 5standard | 429 | Lucas, Orlando (1502) | Lost 1-2 | -191518 |
| 6standard | 523 | D'Ottavio, Joshua (1414) | Lost 0-2 | -201498 |
| 7standard | 487 | Baverso, Vincent (1378) | Lost 0-2 | -201478 |
| top | average opponent: 1496record: 2-5 | new rating: 1478 | ||
| Grand Prix Columbus 2016 (legacy) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 134 | Stewart, Terry (1449) | Won 2-1 | +171536 |
| 2legacy | 134 | Nicholson, Gary (1573) | Draw 1-1 | +11537 |
| 3legacy | 400 | Mei, Tony (1426) | Won 2-0 | +161553 |
| 4legacy | 207 | DeSutter, Ryan (1498) | Won 2-1 | +171570 |
| 5legacy | 107 | Lentini, Kendrick (1655) | Lost 0-2 | -171553 |
| 6legacy | 260 | Carrara, Daniel (1535) | Lost 0-2 | -181535 |
| 7legacy | 407 | Carle, Ian (1610) | Lost 0-2 | -171518 |
| 8legacy | 487 | Hammel, Eric (1514) | Won 2-1 | +181536 |
| 9legacy | 375 | Reilly, Troy (1612) | Draw 1-1 | +21538 |
| top | average opponent: 1541record: 4-3-2 | new rating: 1538 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 628 | Caton, Jonathan (1491) | Won 2-0 | +181518 |
| 2modern | 455 | Groom, Jesse (1538) | Lost 0-2 | -181500 |
| 3modern | 764 | Trunk, Matthew (1496) | Lost 1-2 | -181482 |
| 4modern | 894 | Tilk, Jacob (1634) | Won 2-1 | +211503 |
| 5modern | 910 | Kaczor, Mike (1450) | Won 2-0 | +171520 |
| 6modern | 599 | Lozano, Cade (1517) | Won 2-0 | +181538 |
| 7modern | 507 | Milmine, Tyler (1488) | Lost 1-2 | -191519 |
| 8modern | 529 | Agushi, Adam (1493) | Lost 1-2 | -191500 |
| 9modern | 513 | Yassa, Mike (1546) | Won 2-0 | +191519 |
| top | average opponent: 1517record: 5-4 | new rating: 1519 | ||