Pathirana, Madhushan
Current rating: 1449
Record: 27-32
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 156 | Wells, Venu (1594) | Lost 1-2 | -161469 |
| 3sealed | 457 | Wong, Tom C (1485) | Lost 1-2 | -181451 |
| 4sealed | 53 | Fritz, James (1288) | Won 2-1 | +151466 |
| 5sealed | 479 | Yu, William (1502) | Lost 1-2 | -171449 |
| top | average opponent: 1467record: 1-3 | new rating: 1449 | ||
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1614 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 202 | Kirkpatrick, Greg (1434) | Lost 0-2 | -211593 |
| 2sealed | 513 | Dymerski, Matt (1482) | Lost 0-2 | -201573 |
| 3sealed | 638 | Smith, Scott (1331) | Lost 0-2 | -221551 |
| 4sealed | 687 | ACIERNO, CARMEN (1445) | Won 2-0 | +161567 |
| 5sealed | 584 | Fritz, James (1352) | Lost 1-2 | -221545 |
| 6sealed | 496 | Camp, Darryl (1462) | Lost 0-2 | -201525 |
| 7sealed | 397 | Stenborg, Kevin (1355) | Lost 1-2 | -211504 |
| 9sealed | 263 | Brooks, Cody (1424) | Lost 1-2 | -191485 |
| top | average opponent: 1411record: 1-7 | new rating: 1485 | ||
| Grand Prix Quebec City 2013 (GTC standard) | starting rating: 1589 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 97 | Schnayer, David (1762) | Won 2-1 | +211610 |
| 4standard | 40 | Ramos Modesto, Danilo (1709) | Won 2-1 | +201630 |
| 5standard | 43 | Edel, Willy (2129) | Lost 0-2 | -101620 |
| 6standard | 109 | Garant-Rousseau, Guillaume (1570) | Lost 0-2 | -191601 |
| 7standard | 98 | Robidoux, Marc-Andre (1486) | Won 2-1 | +161617 |
| 8standard | 113 | Beland, Nicolas (1512) | Lost 1-2 | -201597 |
| 9standard | 114 | Amblemen, Ludovik (1533) | Won 2-1 | +171614 |
| top | average opponent: 1672record: 4-3 | new rating: 1614 | ||
| Grand Prix Toronto 2012 (modern) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 75 | Arcega, Deo (1518) | Won 2-0 | +171560 |
| 3modern | 130 | Alkema, Andrew (1539) | Won 2-0 | +181578 |
| 4modern | 34 | Zou, Xin (1554) | Lost 0-2 | -181560 |
| 5modern | 222 | Newby, Andrew (1446) | Won 2-0 | +161576 |
| 6modern | 129 | Cox, Patrick (1855) | Lost 0-2 | -131563 |
| 7modern | 169 | Buscaino, Anthony (1842) | Won 2-1 | +231586 |
| 8modern | 94 | Siow, Lucas (1821) | Won 2-1 | +221608 |
| 9modern | 38 | Leber, Adam (1571) | Lost 0-2 | -191589 |
| top | average opponent: 1643record: 5-3 | new rating: 1589 | ||
| Grand Prix Chicago 2012 (modern) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 145 | Gadbois, Alan (1500) | Won 2-0 | +191481 |
| 2modern | 69 | Rasmussen, Matt (1482) | Won 2-1 | +181499 |
| 3modern | 171 | Bearl, Ken (1648) | Lost 1-2 | -151484 |
| 4modern | 280 | Gangwer, Ben (1468) | Won 2-0 | +171501 |
| 5modern | 237 | Rill, Eric (1666) | Won 2-1 | +211522 |
| 6modern | 62 | York, Thomas l (1588) | Won 2-1 | +201542 |
| 7modern | 94 | Dank, Jason (1659) | Won 2-1 | +201562 |
| 8modern | 51 | Fruehauf, Jake (1637) | Lost 0-2 | -171545 |
| 9modern | 81 | Archdekin, Jamie (1712) | Won 2-1 | +211566 |
| 10modern | 76 | West, Alexander (1831) | Lost 1-2 | -131553 |
| 11modern | 53 | Dulak, David (1534) | Won 2-1 | +181571 |
| 12modern | 50 | Becvar, Nick (1703) | Won 2-0 | +201591 |
| 13modern | 29 | Stoll, Kyle (1883) | Lost 1-2 | -131578 |
| 14modern | 55 | Steele, CJ (1602) | Lost 0-2 | -171561 |
| 15modern | 60 | Croy, Andrew (1584) | Lost 1-2 | -181543 |
| top | average opponent: 1633record: 9-6 | new rating: 1543 | ||
| Grand Prix Montreal 2011 (M12 limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 466 | Kuczynski, Robert (1500) | Lost 0-2 | -191500 |
| 2sealed | 561 | Mason, Jesse S (1446) | Lost 0-2 | -191481 |
| 3sealed | 565 | Evans, Sean (1499) | Lost 0-2 | -171464 |
| 4sealed | 586 | Stoykovich, Rachel (1446) | Won 2-0 | +171481 |
| 5sealed | 547 | Labelle, Olivier (1463) | Lost 1-2 | -181463 |
| 6sealed | 526 | Mathers, Tiernan (1446) | Won 2-0 | +181481 |
| 7sealed | 492 | Wang, Austin (1464) | Lost 1-2 | -191462 |
| top | average opponent: 1466record: 2-5 | new rating: 1462 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 350 | De Carolis, Paul (1520) | Won 2-0 | +181518 |
| 5sealed | 371 | Rowe, Jonathan (1591) | Lost 1-2 | -161502 |
| 6sealed | 396 | Savoie, Alexandre (1554) | Lost 0-2 | -171485 |
| 7sealed | 400 | Li, Roger (1536) | Won 2-1 | +191504 |
| 8sealed | 380 | Buscaino, Anthony (1635) | Won 2-0 | +201524 |
| 9sealed | 369 | Pollock, Elijah (1531) | Won 2-0 | +181542 |
| 10sealed | 347 | Cote, Samuel (1594) | Won 0-0 | +191561 |
| 11draft | 1 | Turtenwald, Owen (1863) | Lost 0-2 | -131548 |
| 12draft | 45 | Lo, Eugene (1544) | Lost 1-2 | -181530 |
| 13draft | 5 | Saito, Tomoharu (1891) | Lost 0-2 | -111519 |
| top | average opponent: 1626record: 5-5 | new rating: 1519 | ||