Manktelow, Benjamin
Current rating: 1485
| Grand Prix London 2018 (RIX limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 96 | Porwol, Kathrin Nicole (1391) | Lost 1-2 | -201444 |
| 2sealed | 649 | Geisel, Daniel (1433) | Won 2-1 | +181462 |
| 3sealed | 632 | Amann, Aymeric (1518) | Draw 1-1 | +11463 |
| 4sealed | 670 | Jorgensen, Torben (1498) | Won 2-0 | +191482 |
| 5sealed | 472 | Alvarez, Javier (1608) | Lost 0-2 | -161466 |
| 6sealed | 620 | Gardner, Alex (1448) | Won 2-0 | +181484 |
| 7sealed | 458 | Williams, Dewayne (1513) | Lost 0-2 | -181466 |
| 8sealed | 452 | Segerstedt, Jonas (1502) | Won 2-0 | +191485 |
| top | average opponent: 1489record: 4-3-1 | new rating: 1485 | ||
| Grand Prix London 2016 (KLD limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 686 | Wiseman, Carleton (1500) | Lost 1-2 | -181465 |
| 2sealed | 831 | Luisoni, Georg (1431) | Lost 1-2 | -191446 |
| 3sealed | 1088 | Holmes, Greg (1508) | Won 2-1 | +191465 |
| 4sealed | 1075 | Esancy, Logan (1482) | Won 2-1 | +191484 |
| 5sealed | 751 | Fabiani, Roberto (1497) | Won 2-0 | +181502 |
| 6sealed | 470 | Lundqvist, Patrik (1521) | Lost 1-2 | -181484 |
| 7sealed | 647 | Knap, Cestmir (1414) | Won 2-1 | +171501 |
| 8sealed | 557 | Ringoir, Lesly (1126) | Won 2-1 | +111512 |
| 9sealed | 375 | Kembery, Oliver (1453) | Won 2-0 | +171529 |
| 10draft | 286 | Mahe, Cyril (1698) | Lost 0-2 | -151514 |
| 11draft | 356 | Dreske, Jan (1626) | Lost 1-2 | -161498 |
| 12draft | 84 | Tomis, Jan (1531) | Lost 1-2 | -171481 |
| 13draft | 238 | Grunewald, Olivier (1511) | Lost 0-2 | -171464 |
| top | average opponent: 1484record: 6-7 | new rating: 1464 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 201 | Miller, James A (1500) | Won 2-1 | +181518 |
| 2standard | 7 | Weaver, Aiden (1500) | Won 2-0 | +181536 |
| 3standard | 59 | Tildesley, Matthew (1505) | Lost 0-2 | -191517 |
| 4standard | 41 | Casserly, Ned (1485) | Lost 0-2 | -181499 |
| 5standard | 394 | Ogletree, Eli (1500) | Won 2-1 | +181517 |
| 6standard | 241 | Mieth, Tobias (1542) | Lost 0-2 | -181499 |
| 7standard | 272 | Barber, Freddie (1583) | Lost 0-2 | -161483 |
| top | average opponent: 1516record: 3-4 | new rating: 1483 | ||