Harpin, Jonathan
Current rating: 1602
Record: 26-22
| Grand Prix Birmingham 2018 (std) (DOM standard) | starting rating: 1606 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 135 | Seray, Christophe (1567) | Won 2-0 | +171623 |
| 3standard | 204 | Van Kuijk, Harm-Joost (1654) | Lost 1-2 | -171606 |
| 4standard | 380 | Hammock, Ross (1498) | Won 2-0 | +161622 |
| 5standard | 131 | Dey, Jonathan (1529) | Won 2-0 | +161638 |
| 6standard | 168 | Roberts, Daniel [ENG] (1641) | Lost 1-2 | -181620 |
| 7standard | 129 | Huisman, Peter (1589) | Lost 1-2 | -181602 |
| top | average opponent: 1580record: 3-3 | new rating: 1602 | ||
| Grand Prix Birmingham 2017 (modern) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 543 | Kear-Smith, Rory (1575) | Lost 1-2 | -161482 |
| 2modern | 494 | Beattie, Jack (1430) | Won 0-0 | +171499 |
| 3modern | 646 | Marrable, Peter (1438) | Lost 1-2 | -191480 |
| 4modern | 742 | Coomber, Adam (1487) | Won 2-0 | +181498 |
| 5modern | 602 | Bessell, Ryan (1507) | Won 2-1 | +181516 |
| 6modern | 361 | Huez, Simone (1538) | Won 2-1 | +191535 |
| 7modern | 234 | Spencer, Kyle (1524) | Won 2-1 | +171552 |
| 8modern | 256 | Pinto, Antonio (1756) | Won 2-1 | +221574 |
| 9modern | 131 | Murphy, David [IRL] (1679) | Lost 1-2 | -161558 |
| 10modern | 155 | Jbeili, Reginald (1606) | Won 2-0 | +191577 |
| 11modern | 108 | Depraz, Jean-Emmanuel (1852) | Won 2-1 | +231600 |
| 12modern | 114 | Dogana, Marco (1631) | Won 2-1 | +181618 |
| 13modern | 29 | Boucek, Jaroslav (1902) | Lost 0-2 | -131605 |
| 14modern | 98 | Johnson, Matthew [ENG] (1587) | Won 2-1 | +181623 |
| 15modern | 66 | Aris Girbau, Arnau (1687) | Lost 1-2 | -171606 |
| top | average opponent: 1613record: 10-5 | new rating: 1606 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 332 | Steelyard, Matthew (1366) | Won 2-1 | +161495 |
| 2standard | 151 | Dondon, Arnaud (1518) | Won 2-0 | +181513 |
| 3standard | 215 | Salmon, Robert (1485) | Won 2-1 | +181531 |
| 4standard | 96 | Zeilstra, Jelmer (1540) | Lost 0-2 | -181513 |
| 5standard | 117 | Bichsel, David (1493) | Lost 0-2 | -181495 |
| 6standard | 158 | Gallinari, Samuele (1476) | Won 2-0 | +171512 |
| 7standard | 205 | Tuuvas, Mattias (1539) | Lost 0-2 | -171495 |
| 8standard | 186 | Willis, Paul (1674) | Won 2-1 | +211516 |
| 9standard | 148 | Martin, Benjamin (1537) | Lost 1-2 | -181498 |
| top | average opponent: 1514record: 5-4 | new rating: 1498 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 177 | Debacker, Nicolas (1599) | Lost 0-2 | -171518 |
| 4block | 250 | Akhtar, Safwan (1518) | Lost 0-2 | -181500 |
| 5block | 500 | Wu, Julien (1502) | Lost 1-2 | -181482 |
| 6block | 109 | Krantz, Benjamin (1246) | Won 2-0 | +141496 |
| 7block | 369 | Powell, George (1561) | Lost 1-2 | -171479 |
| top | average opponent: 1485record: 1-4 | new rating: 1479 | ||
| Grand Prix London 2013 (GTC limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 529 | Garwood, David (1499) | Won 2-1 | +191480 |
| 2sealed | 383 | Joens, Klaus (1795) | Won 2-0 | +241504 |
| 3sealed | 201 | Mezzadri, Martino (1460) | Won 2-1 | +171521 |
| 4sealed | 255 | Bannister, Peter (1578) | Won 2-0 | +191540 |
| 5sealed | 109 | Lopez Calvo, Alexandre (1558) | Won 2-1 | +181558 |
| 6sealed | 23 | Nordahl, Andreas (1917) | Lost 1-2 | -111547 |
| 7sealed | 63 | Koch, Florian (1844) | Lost 1-2 | -131534 |
| 8sealed | 204 | Tomici, Sergio (1518) | Won 2-0 | +171551 |
| 9sealed | 87 | Collinet, Patrick (1626) | Lost 1-2 | -161535 |
| top | average opponent: 1644record: 6-3 | new rating: 1535 | ||
| Grand Prix Manchester 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 460 | Engelhardt, Markus (1480) | Lost 0-2 | -181482 |
| 2sealed | 580 | Strauch, Robert (1352) | Lost 0-2 | -211461 |
| 3sealed | 603 | Townsend, Stuart (1464) | Won 2-0 | +181479 |
| 4sealed | 628 | Malard, Quentin (1484) | Lost 0-2 | -181461 |
| top | average opponent: 1445record: 1-3 | new rating: 1461 | ||