McKenna, Samuel
Current rating: 1446
Record: 4-7
| Grand Prix Charlotte 2015 (modern) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 322 | Kegley, Benjamin (1549) | Lost 0-2 | -171481 |
| 2modern | 610 | Koch, Chris (1482) | Won 2-1 | +181499 |
| 3modern | 532 | Brooks, Nick (1501) | Lost 1-2 | -181481 |
| 4modern | 521 | Lawson, James (1470) | Lost 0-2 | -181463 |
| 5modern | 576 | Alexander, Joshua (1493) | Lost 0-2 | -171446 |
| average opponent: 1499record: 1-4 | new rating: 1446 | |||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 86 | Melander, Scott (1496) | Won 2-1 | +181518 |
| 2modern | 42 | Hall, Joey (1526) | Lost 1-2 | -181500 |
| 3modern | 307 | Mulvihill, Jayson (1500) | Won 2-1 | +181518 |
| 4modern | 345 | Deaton, Courtney (1518) | Won 2-1 | +181536 |
| 5modern | 295 | Groen, Joshua (1465) | Lost 1-2 | -191517 |
| 6modern | 350 | Allison, Seth (1498) | Lost 1-2 | -191498 |
| average opponent: 1500record: 3-3 | new rating: 1498 | |||