Carlson, Johnathan
Current rating: 1543
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 663 | Pech, Zbynek (1542) | Won 2-0 | +171629 |
| 2sealed | 526 | Jakub, Janecek (1520) | Lost 1-2 | -201609 |
| 3sealed | 690 | Wiesen, Ardijan (1463) | Lost 1-2 | -211588 |
| 4sealed | 718 | Sainz Martinez, Mario (1485) | Lost 0-2 | -201568 |
| 5sealed | 722 | Jelsovsky, Jan (1463) | Lost 1-2 | -201548 |
| 6sealed | 702 | Myszkowiak, Maciej (1566) | Lost 0-2 | -171531 |
| 7sealed | 676 | Popek, Michal (1428) | Won 2-0 | +161547 |
| 8sealed | 635 | Vychodil, David (1413) | Won 2-0 | +151562 |
| 9sealed | 602 | Prelcova, Zuzana (1487) | Lost 0-2 | -191543 |
| top | average opponent: 1485record: 3-6 | new rating: 1543 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 474 | Schmitt, Travis (1501) | Won 2-0 | +181516 |
| 2sealed | 436 | Perdue, Mark P (1490) | Won 2-0 | +181534 |
| 3sealed | 479 | Bragg, Tillman (1678) | Won 2-0 | +211555 |
| 4sealed | 474 | Kibler, Brian (2035) | Lost 1-2 | -101545 |
| 5sealed | 476 | Ma, Thomas (1661) | Won 2-1 | +201565 |
| 6sealed | 484 | Williamson, Scott (1347) | Won 2-0 | +141579 |
| 7sealed | 445 | Hill, Cory (1555) | Lost 1-2 | -191560 |
| 8sealed | 474 | Ward, Matt C (1553) | Won 2-1 | +181578 |
| 9sealed | 447 | Conard, Brad (1482) | Won 2-0 | +171595 |
| 10sealed | 433 | Powers, Michael (1566) | Won 2-1 | +171612 |
| top | average opponent: 1587record: 8-2 | new rating: 1612 | ||
| Grand Prix Atlanta 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 23 | Abronson, Jordan (1500) | Lost 0-2 | -181482 |
| 2sealed | 174 | Blair, Jeremy (1482) | Lost 0-2 | -181464 |
| 3sealed | 273 | Blair, Taylor (1465) | Draw 1-1 | 01464 |
| 4sealed | 284 | Villamizar, Daniel (1464) | Won 2-0 | +181482 |
| 5sealed | 233 | Hall, Wesley (1481) | Won 2-1 | +181500 |
| 6sealed | 187 | Lieberman, Jeffrey R (1505) | Lost 0-2 | -181482 |
| 7sealed | 165 | Brignon, Caleb R (1417) | Lost 1-2 | -191463 |
| 8sealed | 139 | Graham, Chelsea (1446) | Won 2-0 | +181481 |
| 9sealed | 105 | Silvers, Bryan (1470) | Won 2-0 | +171498 |
| top | average opponent: 1470record: 4-4-1 | new rating: 1498 | ||