Koch, Chris
Current rating: 1398
Record: 1-7
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 152 | Cannon, Sherrie (1500) | Lost 1-2 | -171429 |
| 2sealed | 685 | Lu, Peter (1659) | Lost 0-2 | -141415 |
| 3sealed | 955 | Baker, Kenneth (1465) | Lost 0-2 | -171398 |
| average opponent: 1541record: 0-3 | new rating: 1398 | |||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 479 | DeForge, Jonathan (1512) | Lost 0-2 | -181482 |
| 2modern | 610 | McKenna, Samuel (1481) | Lost 1-2 | -181464 |
| 3modern | 629 | Swain, James (1484) | Won 2-1 | +191483 |
| 4modern | 540 | Crawford, James (1470) | Lost 1-2 | -191464 |
| 5modern | 574 | Jamison, Kory (1431) | Lost 0-2 | -181446 |
| average opponent: 1476record: 1-4 | new rating: 1446 | |||