Sjostedt, Peter J
Current rating: 1590
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 312 | Garcia, Paul (1500) | Won 2-1 | +171560 |
| 2standard | 253 | Guevara, Franz (1466) | Won 2-0 | +171577 |
| 3standard | 30 | Rosenberg, Jeffrey (1536) | Won 2-0 | +171594 |
| 4standard | 199 | Bowling, Justin (1554) | Won 2-1 | +171611 |
| 5standard | 5 | Zappacosta, Joe (1538) | Lost 1-2 | -191592 |
| 6standard | 66 | Alatis, Eric (1553) | Won 2-1 | +171609 |
| 7standard | 96 | McMurry, Christopher (1573) | Lost 0-2 | -181591 |
| 8standard | 128 | Wenokor, Eric (1475) | Lost 0-2 | -211570 |
| 9standard | 229 | Denmark, Brad (1643) | Won 2-1 | +201590 |
| top | average opponent: 1538record: 6-3 | new rating: 1590 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 180 | Trogdon, Mark (1477) | Won 2-0 | +181522 |
| 2legacy | 96 | Ferrando, Matthew (1707) | Lost 0-2 | -151507 |
| 3legacy | 168 | Pypno, Andrew (1501) | Won 2-0 | +181525 |
| 4legacy | 133 | Kranstuber, Matt C (1500) | Lost 1-2 | -191506 |
| 5legacy | 179 | Rice, David B (1452) | Won 2-0 | +171523 |
| 6legacy | 142 | Powell, Antonio (1620) | Won 2-0 | +201543 |
| top | average opponent: 1543record: 4-2 | new rating: 1543 | ||
| Grand Prix Columbus 2007 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 47 | Gobeyn, Joe (1535) | Lost 1-2 | -171483 |
| 3legacy | 284 | Schrock, John (1500) | Won 2-0 | +181501 |
| 4legacy | 249 | Proudfoot, Stuart W (1517) | Lost 1-2 | -181483 |
| 5legacy | 306 | Curry, Patrick (1503) | Won 2-0 | +191502 |
| 6legacy | 185 | Bezrukov, Semion (1661) | Won 2-0 | +211523 |
| 7legacy | 139 | Ekstrand, Matthew B (1504) | Lost 0-2 | -191504 |
| top | average opponent: 1537record: 3-3 | new rating: 1504 | ||