Martinson, James
Current rating: 1490
Record: 9-10
| Grand Prix Kansas City 2008 (ALA limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 99 | Brantley, Scott C (1500) | Lost 0-2 | -181470 |
| 2sealed | 268 | Benike, Michael (1483) | Won 2-0 | +181488 |
| 3sealed | 159 | McClellan, Bob (1542) | Won 2-1 | +191507 |
| 4sealed | 130 | Hereford, Patrick (1557) | Lost 1-2 | -171490 |
| top | average opponent: 1520record: 2-2 | new rating: 1490 | ||
| Grand Prix Kansas City 2003 (MRD limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Schmidt, Tyler (1500) | Won 2-1 | +181484 |
| 2sealed | 3 | Smith, Barry (1518) | Won 2-0 | +191503 |
| 3sealed | 58 | Orsi, Tony (1536) | Won 2-0 | +191522 |
| 4sealed | 17 | Fennell, Christopher (1514) | Lost 0-2 | -181504 |
| 5sealed | 70 | Schwarz, Sean (1534) | Won 2-0 | +181522 |
| 6sealed | 69 | Heise, Cameron (1558) | Lost 1-2 | -171505 |
| 7sealed | 90 | Saylor, David (1566) | Lost 1-2 | -171488 |
| top | average opponent: 1532record: 4-3 | new rating: 1488 | ||
| Grand Prix Minneapolis 2001 (Invasion block) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 10 | Karels, Simon (1500) | Won 2-0 | +181500 |
| 2block | 88 | Duchow, Adam (1518) | Lost 0-2 | -171483 |
| 3block | 119 | Tolzien, Brandon (1500) | Lost 0-2 | -181465 |
| 4block | 159 | Roman, Josh (1481) | Won 2-1 | +181483 |
| 5block | 124 | Rush, Nathan (1518) | Lost 0-2 | -171466 |
| top | average opponent: 1503record: 2-3 | new rating: 1466 | ||
| Grand Prix Detroit 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 40 | Latham, Matthew (1500) | Lost 0-2 | -181482 |
| 2sealed | 252 | Richardson III, Charles (1482) | Won 2-0 | +181500 |
| 3sealed | 169 | Stephan, Louis A. (1498) | Lost 1-2 | -181482 |
| top | average opponent: 1493record: 1-2 | new rating: 1482 | ||