Lamson, Joshua
Current rating: 1450
Record: 4-7-1
| Grand Prix Denver 2015 (KTK standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 235 | Null, Nick (1500) | Won 2-0 | +191502 |
| 2standard | 63 | Spartz, Emerson (1519) | Lost 1-2 | -181484 |
| 3standard | 493 | Ickowicz, Zachary (1499) | Lost 0-2 | -181466 |
| 4standard | 500 | Wong, Patrick (1515) | Lost 1-2 | -171449 |
| 5standard | 583 | Headley, Ian (1467) | Lost 1-2 | -171432 |
| 6standard | 519 | McCoy, Nicholas (1445) | Won 2-0 | +181450 |
| average opponent: 1491record: 2-4 | new rating: 1450 | |||
| Grand Prix Phoenix 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 480 | Kovars, Damon (1500) | Won 2-0 | +181518 |
| 2standard | 15 | Riess, Nicholas (1518) | Won 2-1 | +181536 |
| 3standard | 199 | Weigle, Sean (1795) | Lost 0-2 | -131523 |
| 4standard | 376 | Duda, Chris (1448) | Draw 1-1 | -21521 |
| 5standard | 301 | Amestoy, Adam (1441) | Lost 0-2 | -191502 |
| 6standard | 415 | Retzer, Garrett (1483) | Lost 0-2 | -191483 |
| average opponent: 1531record: 2-3-1 | new rating: 1483 | |||