Simmons, Derek
Current rating: 1538
| Grand Prix Vancouver 2016 (OGW limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 103 | Oliver, Neal (2024) | Won 0-0 | +261514 |
| 4sealed | 70 | Tindale, Scott (1537) | Won 2-0 | +191533 |
| 5sealed | 56 | Orr, Michael (1593) | Won 2-1 | +191552 |
| 6sealed | 35 | Rootledge, Andrew (1564) | Won 2-0 | +181570 |
| 7sealed | 1 | Waite, Paul (1760) | Won 2-1 | +221592 |
| 8sealed | 5 | Litvak, Mark (1708) | Lost 1-2 | -161576 |
| 9sealed | 30 | King, Peter (1612) | Lost 0-2 | -181558 |
| 10draft | 101 | Froehlich, Eric (2058) | Lost 1-2 | -91549 |
| 11draft | 8 | Costa, Matthew (1970) | Lost 0-2 | -111538 |
| top | average opponent: 1759record: 5-4 | new rating: 1538 | ||
| Grand Prix Salt Lake City 2012 (DKA standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 159 | Goen, Rob (1500) | Won 2-1 | +191483 |
| 2standard | 87 | Clauson, Nole J (1485) | Won 1-0 | +181501 |
| 3standard | 65 | McGuinn, Michael (1536) | Won 2-0 | +181519 |
| 4standard | 10 | Sullivan, Kyle (1486) | Lost 0-2 | -181501 |
| 5standard | 180 | Sharfman, David (1771) | Lost 0-2 | -131488 |
| top | average opponent: 1556record: 3-2 | new rating: 1488 | ||
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 432 | Murphy, Colin (1500) | Lost 0-2 | -181482 |
| 2sealed | 584 | Moline, David (1482) | Lost 0-2 | -181464 |
| top | average opponent: 1491record: 0-2 | new rating: 1464 | ||