Mayes, John
Current rating: 1612
Record: 17-12-3
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1617 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 92 | Mahler, Hans (1577) | Lost 0-2 | -181599 |
| 3sealed | 194 | Castrodale, Brett (1500) | Won 2-1 | +161615 |
| 4sealed | 157 | Prosak, Doug (1504) | Won 2-0 | +161631 |
| 5sealed | 54 | Becker, Jonathan (1761) | Lost 1-2 | -161615 |
| 6sealed | 123 | Coppage, Thomas (1532) | Won 2-1 | +171632 |
| 7sealed | 60 | Poplin, Ryan (1540) | Lost 0-2 | -201612 |
| top | average opponent: 1569record: 3-3 | new rating: 1612 | ||
| Grand Prix Charlotte 2005 (extended) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 61 | Thomas, Baron (1500) | Won 2-0 | +191505 |
| 2extended | 27 | Phillips, Chad (1519) | Won 2-0 | +181523 |
| 3extended | 50 | Doerfler, Justin (1536) | Won 2-0 | +181541 |
| 4extended | 31 | Baughman, Jacob (1567) | Won 2-1 | +181559 |
| 5extended | 20 | Barnette, Chad (1541) | Won 2-0 | +181577 |
| 6extended | 5 | McDaniel, Chris (1847) | Won 2-1 | +231600 |
| 7extended | 6 | Barnett, Noah (1585) | Draw 1-1 | 01600 |
| 8extended | 3 | McClellan, Matt (1651) | Lost 1-2 | -171583 |
| 9extended | 10 | Postlethwait, William (1834) | Won 2-1 | +221605 |
| 10extended | 10 | Morawski, Jonathan (1775) | Lost 0-2 | -151590 |
| 11extended | 17 | Marchesano, Ernie (1692) | Draw 1-1 | +21592 |
| 12extended | 19 | Taulbee, Brad (1753) | Won 2-1 | +211613 |
| 13extended | 15 | Thompson, Gerry (1809) | Lost 0-2 | -151598 |
| 14extended | 20 | Huang, Don (1648) | Won 2-0 | +191617 |
| top | average opponent: 1661record: 9-3-2 | new rating: 1617 | ||
| Grand Prix Atlanta 2003 (8ED standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 92 | Boyd, Alex (1500) | Lost 1-2 | -171446 |
| 2standard | 154 | Smith, Jack (1482) | Lost 0-2 | -181428 |
| 3standard | 240 | Kirkland, James (1463) | Won 2-0 | +191447 |
| 4standard | 225 | Jaki, Thomas (1543) | Lost 1-2 | -161431 |
| 5standard | 212 | Stewart, Alexander (1446) | Won 2-0 | +181449 |
| 6standard | 166 | Tomlinson, Brandon (1482) | Won 2-0 | +191468 |
| 7standard | 121 | Landry, Lyle (1500) | Won 2-0 | +181486 |
| top | average opponent: 1488record: 4-3 | new rating: 1486 | ||
| Grand Prix New Orleans 2003 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 124 | Harrison, Joshua (1500) | Lost 0-2 | -181482 |
| 2extended | 132 | Karasoulis, Stefan (1429) | Lost 1-2 | -191463 |
| 3extended | 147 | Gardner, Kevin (1464) | Lost 0-1 | -181445 |
| 4extended | 174 | Hawthorne, Christopher (1446) | Won 2-0 | +181463 |
| 5extended | 148 | Ingram, Russell (1464) | Draw 1-1 | 01463 |
| top | average opponent: 1461record: 1-3-1 | new rating: 1463 | ||