Pierce, Declan
Current rating: 1590
Record: 11-6-1
| Grand Prix London 2013 (GTC limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 320 | Sophie, Crotti (1500) | Won 2-0 | +181533 |
| 2sealed | 24 | Norris, Pete (1549) | Won 2-1 | +181551 |
| 3sealed | 249 | Eriksson, Jonas (1538) | Draw 1-1 | 01551 |
| 4sealed | 264 | Barby, Matthew (1517) | Won 2-1 | +171568 |
| 5sealed | 130 | Ganz, Andreas (1721) | Lost 0-2 | -151553 |
| 6sealed | 280 | Davidsson, Jonathan (1535) | Won 2-0 | +171570 |
| 7sealed | 174 | Michlits, Mario (1714) | Won 2-1 | +211591 |
| 8sealed | 104 | Cattrysse, Sabbe (1670) | Lost 0-2 | -171574 |
| 9sealed | 200 | Corbet, Bryan (1458) | Won 2-1 | +161590 |
| average opponent: 1578record: 6-2-1 | new rating: 1590 | |||
| Grand Prix Manchester 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 33 | Haugland, Kirby E (1500) | Lost 0-2 | -181482 |
| 2sealed | 179 | Pearson, Ben (1594) | Lost 0-2 | -161466 |
| 3sealed | 211 | Brown, Ollie (1464) | Won 2-0 | +181484 |
| 4sealed | 228 | Holding, Colin (1451) | Won 2-0 | +171501 |
| 5sealed | 134 | Izsak, Szonja (1411) | Lost 1-2 | -191482 |
| 6sealed | 163 | Bamberger, Mark (1491) | Won 2-0 | +181500 |
| 7sealed | 151 | Freeman, Peter (1499) | Won 2-0 | +181518 |
| 8sealed | 101 | Ludena, David (1535) | Lost 1-2 | -181500 |
| 9sealed | 93 | Paleocrassas, Dimitrio (1309) | Won 2-1 | +151515 |
| average opponent: 1473record: 5-4 | new rating: 1515 | |||