Koch, Peter
Current rating: 1537
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 399 | Tellez, Manuel (1339) | Lost 1-2 | -211481 |
| 2legacy | 488 | Myers, Ben (1482) | Won 2-1 | +181499 |
| 3legacy | 438 | Seaman, Patric (1435) | Lost 1-2 | -191480 |
| 4legacy | 555 | Storms, Robert (1423) | Won 2-0 | +171497 |
| 5legacy | 554 | Giuliani, Michael (1623) | Lost 1-2 | -161481 |
| 6legacy | 522 | Bissiri, Anthony (1486) | Won 2-0 | +181499 |
| 7legacy | 358 | Wimpenny, Edward (1519) | Won 2-0 | +181517 |
| 8legacy | 294 | Rogers, George (1605) | Won 2-0 | +201537 |
| top | average opponent: 1489record: 5-3 | new rating: 1537 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 1712 | Hindman, Dennis (1594) | Won 2-0 | +211464 |
| 2legacy | 1624 | Keller, Michael (1400) | Draw 1-1 | -11463 |
| 3legacy | 1705 | Stagno, Chris (1467) | Won 2-0 | +181481 |
| 4legacy | 1550 | Koga, Kevin (1538) | Draw 1-1 | +11482 |
| 5legacy | 1678 | Schnelle, Stephen (1505) | Won 2-0 | +181500 |
| 6legacy | 1569 | Lesnewski, Dylan (1552) | Lost 1-2 | -171483 |
| 7legacy | 1668 | Farrell, Steven (1535) | Draw 1-1 | +11484 |
| 8legacy | 1616 | Christensen, James (1457) | Won 2-0 | +181502 |
| top | average opponent: 1506record: 4-1-3 | new rating: 1502 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1488 | Webb, Jody (1455) | Won 2-1 | +171517 |
| 2modern | 1164 | Causey, Phillip (1518) | Lost 0-2 | -181499 |
| 3modern | 1539 | Gaskill, Patrick (1452) | Lost 0-2 | -191480 |
| 4modern | 1579 | Rackowski, Jonathan (1572) | Lost 0-2 | -161464 |
| 5modern | 1539 | Long, Mike (1318) | Lost 0-2 | -211443 |
| top | average opponent: 1463record: 1-4 | new rating: 1443 | ||