Tiemeyer, Derek
Current rating: 1465
Record: 5-7
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 155 | Haugen, David (1500) | Lost 0-2 | -171464 |
| 2sealed | 500 | Conway, Zach (1481) | Lost 1-2 | -181446 |
| 3sealed | 575 | Malcomson, Jerry R (1464) | Won 2-0 | +181464 |
| 4sealed | 479 | Boyd, Michael (1481) | Won 2-0 | +191483 |
| 5sealed | 342 | Legler, Tad (1493) | Lost 1-2 | -181465 |
| average opponent: 1484record: 2-3 | new rating: 1465 | |||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 334 | Swartz, Ben (1445) | Lost 0-2 | -191481 |
| 2standard | 399 | Hooper, Zachary (1481) | Lost 0-2 | -181463 |
| 3standard | 473 | Lagmay, Quin (1464) | Won 2-0 | +181481 |
| 4standard | 440 | Porath, Aaron (1430) | Won 2-1 | +171498 |
| 5standard | 411 | OConnor, Kevin (1498) | Won 2-0 | +181516 |
| 6standard | 329 | Riley, Jordan (1574) | Lost 1-2 | -171499 |
| 7standard | 298 | Stinnett, Benjamin (1518) | Lost 0-2 | -181481 |
| average opponent: 1487record: 3-4 | new rating: 1481 | |||