Vaughan, Michael
Current rating: 1582
Record: 20-19
| Grand Prix London 2018 (RIX limited) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 347 | Ferguson, Sean (1762) | Won 2-0 | +221552 |
| 3sealed | 157 | [anonymous] | Lost 0-2 | -171535 |
| 4sealed | 515 | Daman, James (1522) | Won 2-0 | +171552 |
| 5sealed | 334 | Morrissey, Thomas (1714) | Lost 1-2 | -151537 |
| 6sealed | 492 | Gomez Martinez, Eugenio (1533) | Won 2-0 | +181555 |
| 7sealed | 416 | Dobrjakov, Mark (1554) | Won 2-0 | +181573 |
| 8sealed | 180 | Bienko, Krzysztof (1544) | Won 2-0 | +181591 |
| 9sealed | 166 | Boyhan, Aaron (1918) | Won 2-0 | +231614 |
| 10draft | 80 | Buckle, Callan (1594) | Won 2-0 | +181632 |
| 11draft | 169 | Rademacher, Friedrich (1713) | Lost 0-2 | -171615 |
| 12draft | 167 | Tromp, Sjors (1636) | Lost 0-2 | -171598 |
| 13draft | 79 | Gotfredsen, Anders (1695) | Lost 0-2 | -161582 |
| top | average opponent: 1647record: 7-5 | new rating: 1582 | ||
| Grand Prix Liverpool 2017 (XLN limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 155 | Duran Asensio, Miguel Angel (1595) | Won 2-1 | +191532 |
| 3sealed | 143 | Law, Tom (1801) | Won 2-1 | +231555 |
| 4sealed | 51 | Hugony, Francesco (2074) | Lost 0-2 | -91546 |
| 5sealed | 179 | Duffy, Thomas (1588) | Won 2-0 | +191565 |
| 6sealed | 67 | Speckmann, Marcel (1595) | Won 2-0 | +181583 |
| 7sealed | 70 | Pizzey, Lian (1753) | Lost 1-2 | -151568 |
| 8sealed | 106 | Hottmann, Alex (1972) | Lost 0-2 | -111557 |
| 9sealed | 122 | Maij, Rosario (1885) | Won 2-0 | +241581 |
| 10draft | 69 | Sushalskyy, Sergiy (1938) | Lost 0-2 | -121569 |
| 11draft | 177 | Macgregor, Neil (1538) | Lost 1-2 | -181551 |
| 12draft | 130 | Bhardwa, Shyam (1579) | Won 2-0 | +181569 |
| 13draft | 140 | Tonkin, Mathew (1421) | Lost 1-2 | -211548 |
| 14draft | 32 | Macgregor, Neil (1521) | Lost 0-2 | -181530 |
| top | average opponent: 1712record: 6-7 | new rating: 1530 | ||
| Grand Prix Bologna 2017 (AKH limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 193 | Barzan, Yuri (1556) | Lost 1-2 | -161446 |
| 2sealed | 537 | Stefanini, Andrea (1429) | Won 2-0 | +181464 |
| 3sealed | 582 | Pacelli, Luca (1499) | Lost 1-2 | -181446 |
| 4sealed | 730 | Miori, Stefano (1493) | Lost 0-2 | -171429 |
| 5sealed | 752 | Galici, Matteo (1466) | Won 2-0 | +191448 |
| 6sealed | 667 | Marongiu, Federico (1415) | Won 2-0 | +171465 |
| 7sealed | 410 | Rossi, Christian (1583) | Won 2-1 | +201485 |
| 8sealed | 343 | Pla, David (1859) | Won 2-0 | +251510 |
| 9sealed | 250 | Splendori, Giuseppe (1553) | Won 2-1 | +191529 |
| 10draft | 67 | Cointe, Antoine (1642) | Lost 0-2 | -161513 |
| top | average opponent: 1549record: 6-4 | new rating: 1513 | ||
| Grand Prix London 2016 (KLD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 469 | Battram, Ron (1465) | Won 2-1 | +171517 |
| 2sealed | 43 | Damario, Craig (1398) | Lost 0-2 | -201497 |
| 3sealed | 788 | Barzan, Yuri (1500) | Lost 0-2 | -181479 |
| 4sealed | 993 | Hansen, Finn (1542) | Lost 1-2 | -171462 |
| top | average opponent: 1476record: 1-3 | new rating: 1462 | ||