Hafter, David
Current rating: 1555
Record: 18-14 (GP) / 6-9 (professional)
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 354 | Molesch, Max (1563) | Lost 0-2 | -181516 |
| 2standard | 546 | Rivera Garcia, Rafael (1502) | Won 2-0 | +181534 |
| 3standard | 440 | Baird, Cameron (1498) | Won 2-1 | +171551 |
| 4standard | 253 | Maine, Andrew (1569) | Lost 0-2 | -171534 |
| 5standard | 441 | Duarte, Hiram A (1504) | Won 2-0 | +171551 |
| 6standard | 349 | Stechman, Tyler (1553) | Won 2-1 | +181569 |
| 7standard | 121 | Wolansky, Steven (1799) | Lost 0-2 | -141555 |
| top | average opponent: 1570record: 4-3 | new rating: 1555 | ||
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 208 | Breland, John (1500) | Won 2-1 | +181534 |
| 2standard | 195 | Beckman, David (1459) | Won 2-1 | +161550 |
| 3standard | 177 | Vasilakis, Billy (1521) | Won 2-0 | +181568 |
| 4standard | 71 | Castellanos, Jayme (1657) | Lost 0-2 | -171551 |
| 5standard | 219 | Bauer, Michael (1591) | Won 2-1 | +191570 |
| 6standard | 48 | Abreu, Johnny (1554) | Lost 0-2 | -181552 |
| 7standard | 205 | Roscioli, Jonathan (1539) | Lost 1-2 | -181534 |
| top | average opponent: 1546record: 4-3 | new rating: 1534 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 41 | Pozsgay, Michael (1583) | Lost 0-2 | -171516 |
| 3sealed | 267 | Samuels, Don (1555) | Won 2-0 | +181534 |
| 4sealed | 190 | Langewisch, Topher (1517) | Lost 0-2 | -181516 |
| top | average opponent: 1552record: 1-2 | new rating: 1516 | ||
| Pro Tour Honolulu 2009 (Alara block) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 48 | Pettit, Aaron (1618) | Lost 1-2 | -181565 |
| 2block | 118 | de Rooij, Danny (1610) | Won 2-0 | +191584 |
| 3block | 124 | Riccardi, Joseph (1484) | Won 2-0 | +161600 |
| 4block | 84 | Priest, Eli (1510) | Lost 1-2 | -191581 |
| 5block | 86 | Kurihara, Shingou (1925) | Lost 0-2 | -121569 |
| 6draft | 78 | Carvalho, Paulo (1568) | Lost 1-2 | -181551 |
| 7draft | 89 | Rigby, Neil (1547) | Lost 1-2 | -181533 |
| top | average opponent: 1609record: 2-5 | new rating: 1533 | ||
| Pro Tour Hollywood 2008 (SHM standard) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 162 | Greene, Christopher (1698) | Won 2-1 | +211597 |
| 2standard | 47 | Noworaj, Andrew (1571) | Lost 0-2 | -191578 |
| 3standard | 121 | Cividini, Ognjen (1481) | Won 2-1 | +161594 |
| 4standard | 86 | Fyssas, Antonis (1525) | Won 2-0 | +171611 |
| 5standard | 16 | Geiger, Frederic (1728) | Won 2-1 | +201631 |
| 6standard | 11 | Tsumura, Kenji (2041) | Lost 1-2 | -111620 |
| 7standard | 44 | Ashford, Marshall (1552) | Lost 0-2 | -191601 |
| 8standard | 87 | Pettit, Aaron (1589) | Lost 0-2 | -181583 |
| top | average opponent: 1648record: 4-4 | new rating: 1583 | ||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 115 | Cornelius, Michael (1500) | Won 2-0 | +181518 |
| 2sealed | 16 | Spaur, Matthew (1518) | Won 2-0 | +181536 |
| 3sealed | 11 | Hurst, Anthony H (1535) | Won 2-1 | +181554 |
| 4sealed | 84 | Ketita, Nassim (1673) | Won 2-0 | +201574 |
| 5sealed | 27 | Caverly, Matt (1549) | Won 2-1 | +181592 |
| 6sealed | 16 | Aten, Timothy (1852) | Won 2-1 | +221614 |
| 7sealed | 2 | Suarez, Daniel (1625) | Lost 0-2 | -171597 |
| 8sealed | 35 | Simoneaux, Adam (1606) | Lost 1-2 | -181579 |
| 9sealed | 35 | Stark, Ben S (1781) | Won 2-1 | +211600 |
| 10draft | 30 | Cordell, Kenneth (1543) | Won 2-1 | +171617 |
| 11draft | 25 | Stolzmann, John (1546) | Lost 0-2 | -191598 |
| 12draft | 22 | Nelson, Brandon (1603) | Lost 1-2 | -181580 |
| 13draft | 22 | Woodley, Ian (1614) | Lost 0-2 | -171563 |
| 14draft | 22 | Ruel, Olivier (2072) | Won 2-1 | +261589 |
| 15draft | 12 | Nakamura, Shuhei (1877) | Lost 0-2 | -131576 |
| top | average opponent: 1660record: 9-6 | new rating: 1576 | ||