Piotto, Joel
Current rating: 1636
Record: 17-8 (GP) / 0-3 (professional)
| Grand Prix Melbourne 2009 (ZEN limited) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 15 | Rabin, Gabriel (1500) | Won 2-0 | +181511 |
| 3sealed | 44 | Van Kalker, Zeke (1559) | Won 2-0 | +191530 |
| 4sealed | 26 | Mulcahy, Luke (1497) | Won 2-0 | +171547 |
| 5sealed | 11 | Watanabe, Yuuya (2093) | Lost 1-2 | -91538 |
| 6sealed | 53 | O'Connor, Andrew [AUS] (1556) | Won 2-1 | +191557 |
| 7sealed | 15 | O'Rourke, Stuart (1555) | Won 2-0 | +181575 |
| 8sealed | 9 | Nicoll, Aaron (1561) | Won 2-1 | +171592 |
| 9draft | 38 | Marshall, David (1570) | Lost 0-2 | -181574 |
| 10draft | 32 | Steele, Wayne (1540) | Won 2-1 | +171591 |
| 11draft | 28 | Caley, Dan (1623) | Won 2-1 | +191610 |
| 12draft | 35 | Swords, Chester (1609) | Won 2-0 | +181628 |
| 13draft | 16 | Ruel, Olivier (1935) | Won 2-1 | +231651 |
| 14draft | 26 | Zhang, Jacky (1679) | ID | 01651 |
| Qdraft | Dalliston, Shane (1791) | Lost 1-2 | -151636 | |
| top | average opponent: 1648record: 10-3-1 | new rating: 1636 | ||
| Pro Tour Kuala Lumpur 2008 (MOR draft) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 56 | Dos Remedios, Aaron (1558) | Lost 0-2 | -181524 |
| 2draft | 125 | Ruel, Antoine (1823) | Lost 0-2 | -121512 |
| 4draft | 123 | Chen, Ziming (1472) | Lost 1-2 | -191493 |
| top | average opponent: 1618record: 0-3 | new rating: 1493 | ||
| Grand Prix Brisbane 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 14 | Smout, Peter (1518) | Won 2-0 | +181518 |
| 3sealed | 6 | Aplin, Steven (1588) | Won 2-1 | +201538 |
| 4sealed | 30 | Phillips, Russell [AUS] (1553) | Won 2-1 | +181556 |
| 5sealed | 3 | Swannack, Cole (1686) | Won 2-1 | +201576 |
| 6sealed | 6 | Eckermann, Andrew (1533) | Won 2-1 | +171593 |
| 7sealed | 1 | Piechnick, Daniel (1540) | Lost 1-2 | -181575 |
| 8draft | 18 | Eckermann, Andrew (1539) | Lost 0-0 | -191556 |
| 9draft | 26 | Quenoy, John D (1535) | Lost 1-2 | -191537 |
| 10draft | 27 | Hinz, Levi (1444) | Won 2-0 | +171554 |
| 11draft | 17 | Kurihara, Shingou (1927) | Lost 0-0 | -121542 |
| 12draft | 21 | Quenoy, John D (1532) | Lost 1-2 | -181524 |
| 13draft | 16 | Farrelly, Paul (1519) | Won 0-0 | +181542 |
| top | average opponent: 1576record: 7-5 | new rating: 1542 | ||