Guskin, David
Current rating: 1623
Record: 15-8 (GP) / 3-3 (professional)
| Pro Tour Geneva 2007 (PLC draft) | starting rating: 1622 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 172 | Mokhtaruddin, Mohd Hafiz (1473) | Lost 1-2 | -211601 |
| 2draft | 146 | Dao, Phu (1455) | Won 2-1 | +161617 |
| 3draft | 126 | Oberbek, Przemyslaw (1711) | Lost 1-2 | -171600 |
| 4draft | 90 | Sabukyan, Levon (1536) | Won 2-0 | +171617 |
| 5draft | 55 | Joens, Klaus (1831) | Won 2-0 | +221639 |
| 6draft | 81 | Cardin, Guillaume (1748) | Lost 1-2 | -161623 |
| top | average opponent: 1626record: 3-3 | new rating: 1623 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Lafakis, Chris (1516) | Won 2-0 | +171566 |
| 2sealed | 59 | Smith, Brian (1521) | Won 2-1 | +171583 |
| 3sealed | 62 | Connelly, Christopher (1662) | Lost 1-2 | -161567 |
| 4sealed | 75 | Cape, Phil (1591) | Won 2-0 | +181585 |
| 5sealed | 45 | Boozer, Chris (1617) | Won 2-0 | +191604 |
| 6sealed | 42 | van Heeswijk, Roel (1604) | Won 2-1 | +181622 |
| 7sealed | 43 | Sato, Takanobu (1598) | Lost 0-2 | -191603 |
| 8sealed | 41 | Westfall, Matthew (1654) | Won 2-0 | +191622 |
| top | average opponent: 1595record: 6-2 | new rating: 1622 | ||
| Grand Prix Charlotte 2005 (extended) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 19 | Hendrickson, Cecil (1500) | Won 2-0 | +181551 |
| 2extended | 64 | Sutton, Christopher (1470) | Won 2-1 | +161567 |
| 3extended | 21 | Devore, Keith (1535) | Lost 1-2 | -181549 |
| 4extended | 81 | Bowles, Adam (1534) | Lost 0-2 | -191530 |
| 5extended | 150 | Lyons, Paul (1572) | Won 2-0 | +191549 |
| 6extended | 119 | Lunsford, Alan (1588) | Won 2-0 | +191568 |
| 7extended | 73 | Moreno, William (1493) | Lost 0-2 | -191549 |
| top | average opponent: 1527record: 4-3 | new rating: 1549 | ||
| Grand Prix Detroit 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 133 | Waters, Alex (1500) | Won 2-0 | +181518 |
| 2sealed | 9 | Plouffe, Jonathan E (1518) | Won 2-0 | +181536 |
| 3sealed | 32 | Miguel, Andres (1519) | Won 2-0 | +181554 |
| 4sealed | 27 | Martel, Jason (1432) | Lost 0-2 | -211533 |
| 5sealed | 53 | Opalk, Ryan (1526) | Won 2-0 | +181551 |
| 6sealed | 63 | John, Alexander (1553) | Lost 0-2 | -181533 |
| 7sealed | 55 | Parker, Mike (1536) | Lost 1-2 | -181515 |
| 8sealed | 76 | Bowen, Steven (1510) | Won 2-1 | +181533 |
| top | average opponent: 1512record: 5-3 | new rating: 1533 | ||