Calahan, Katie
Current rating: 1472
Record: 5-7-1
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 245 | Yates, Mason (1500) | Won 2-0 | +181500 |
| 2sealed | 69 | Huang, Peter (1751) | Draw 1-1 | +51505 |
| 3sealed | 147 | Penrod, Shaun (1518) | Won 2-1 | +181523 |
| 4sealed | 76 | Cantu, Adrian (1536) | Won 2-0 | +181541 |
| 5sealed | 38 | Vinson, Daniel (1590) | Lost 0-2 | -171524 |
| 6sealed | 87 | Jones, Jonathan (1578) | Lost 0-2 | -171507 |
| 7sealed | 134 | Castle, Drew (1483) | Lost 0-2 | -191488 |
| 8sealed | 107 | Auge, Chris (1553) | Lost 0-2 | -161472 |
| average opponent: 1564record: 3-4-1 | new rating: 1472 | |||
| Grand Prix Omaha 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 268 | Dubay, David (1518) | Lost 0-2 | -181482 |
| 2modern | 392 | Gibson, Zachary (1429) | Won 2-1 | +171499 |
| 3modern | 363 | Manchester, Ben (1520) | Lost 1-2 | -171482 |
| 4modern | 454 | Peterson-Burch, Darian (1483) | Lost 0-2 | -181464 |
| 5modern | 469 | Harmon, Jay (1463) | Won 2-1 | +181482 |
| average opponent: 1483record: 2-3 | new rating: 1482 | |||