Derrick, Samuel
Current rating: 1493
Record: 18-19
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 223 | Barrett, Matthew (1518) | Won 2-0 | +191492 |
| 2sealed | 146 | King, Bo (1500) | Lost 1-2 | -181474 |
| 3sealed | 473 | Karns, Joseph (1500) | Won 2-0 | +191493 |
| 4sealed | 360 | Reefer, Shawn (1481) | Won 2-0 | +171510 |
| 5sealed | 333 | Moore, Nick (1521) | Lost 0-2 | -171493 |
| 6sealed | 434 | Biamonte, Vince (1502) | Won 2-0 | +181511 |
| 7sealed | 267 | Bullington, Jay (1503) | Lost 0-2 | -181493 |
| top | average opponent: 1504record: 4-3 | new rating: 1493 | ||
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 485 | Sabo, Sean (1500) | Won 2-1 | +171544 |
| 2standard | 66 | Hulmes, Mark S (1500) | Lost 0-2 | -181526 |
| 3standard | 562 | Li, Brook (1593) | Lost 1-2 | -171509 |
| 4standard | 677 | Schoellkopf, Jeff (1483) | Lost 1-2 | -191490 |
| 5standard | 664 | Thomas, Kevin (1595) | Lost 1-2 | -161474 |
| 6standard | 591 | Esposito, Vincent (1449) | Won 2-1 | +181492 |
| 7standard | 464 | Steve U., (1466) | Lost 1-2 | -191473 |
| top | average opponent: 1512record: 2-5 | new rating: 1473 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 83 | Cinquegrana, Kevin D (1500) | Won 2-1 | +191487 |
| 2standard | 349 | Gabrys, William P (1500) | Lost 1-2 | -181469 |
| 3standard | 318 | Crane, Patrick (1473) | Lost 0-2 | -181451 |
| 4standard | 664 | Naumann, Carl (1463) | Won 2-0 | +181469 |
| 5standard | 520 | Aspinwall, Derek (1513) | Won 2-0 | +191488 |
| 6standard | 381 | Arguelles, Robert (1612) | Won 2-1 | +201508 |
| 7standard | 208 | Bauer, Michael (1440) | Won 2-0 | +171525 |
| 8standard | 124 | Haupt, Roland (1542) | Won 2-0 | +181543 |
| 9standard | 65 | Upham, Bryan (1630) | Lost 0-2 | -161527 |
| top | average opponent: 1519record: 6-3 | new rating: 1527 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 182 | Harris, Grayson (1486) | Won 2-0 | +181504 |
| 2standard | 117 | Chase, Neal (1500) | Won 2-0 | +181522 |
| 3standard | 139 | Nolen, Lauren (1522) | Lost 1-2 | -181504 |
| 4standard | 423 | Lee, David (1495) | Lost 0-2 | -181486 |
| 5standard | 410 | Hopkins, Jonathan (1498) | Lost 0-2 | -181468 |
| top | average opponent: 1500record: 2-3 | new rating: 1468 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 562 | Rae, Daniel M [USA] (1434) | Lost 1-2 | -191481 |
| 2legacy | 569 | Morgan, Sean (1511) | Won 2-0 | +181499 |
| 3legacy | 571 | Morin, Aubrey (1485) | Lost 0-2 | -181481 |
| 4legacy | 602 | Naidu, Akash (1520) | Won 2-0 | +191500 |
| 5legacy | 560 | Jackson, Nathaniel (1521) | Won 2-1 | +181518 |
| 6legacy | 548 | Verhey, Gavin (1702) | Won 2-1 | +221540 |
| 7legacy | 468 | Guerette, Simon (1507) | Lost 0-2 | -191521 |
| 8legacy | 500 | Mccormick, Brandon (1505) | Lost 1-2 | -181503 |
| 9legacy | 499 | Roberge, Mathieu (1582) | Lost 0-2 | -171486 |
| top | average opponent: 1530record: 4-5 | new rating: 1486 | ||