Penkauskas II, David
Current rating: 1575
Record: 11-7-1
| Grand Prix Dallas 2007 (extended) | starting rating: 1605 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 22 | Tilly, Jeremy (1399) | Won 2-1 | +151620 |
| 2extended | 145 | Johnston, Ryan (1486) | Lost 1-2 | -211599 |
| 3extended | 212 | Beardsley, Ted (1483) | Won 0-0 | +161615 |
| 4extended | 159 | Suarez, Andres (1519) | Lost 0-2 | -201595 |
| 5extended | 246 | Quinones, Roberto R (1482) | Lost 0-2 | -201575 |
| average opponent: 1474record: 2-3 | new rating: 1575 | |||
| Grand Prix Austin 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 63 | Young, Robert [USA] (1500) | Won 2-1 | +181518 |
| 2sealed | 43 | LeJeune, Derek (1518) | Won 2-1 | +181536 |
| 3sealed | 46 | Russell, Paul (1774) | Won 2-0 | +221558 |
| 4sealed | 6 | Blackman, Brett (1505) | Draw 1-1 | -11557 |
| 5sealed | 26 | Shapiro, Jeremy (1625) | Won 2-0 | +201577 |
| 6sealed | 12 | Scheel, Brandon (1627) | Won 2-0 | +181595 |
| 7sealed | 7 | Burdick, Dan (1725) | Lost 1-2 | -151580 |
| 8sealed | 21 | Schmaltz, Matt (1751) | Won 2-0 | +211601 |
| 9rochester | 6 | Musser, Michael (1776) | Lost 1-2 | -151586 |
| 10rochester | 22 | Spears, Jimmy (1582) | Lost 1-2 | -181568 |
| 11rochester | 22 | Watson, Jonathan (1516) | Won 2-0 | +171585 |
| 12rochester | 8 | Hansen, Kevin (1503) | Won 2-0 | +171602 |
| 13rochester | 8 | De Rosa, Antonino (1809) | Lost 0-2 | -151587 |
| 14rochester | 25 | Morrow, Henry (1596) | Won 2-0 | +181605 |
| average opponent: 1629record: 9-4-1 | new rating: 1605 | |||