Marron, Hayley
Current rating: 1411
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 187 | Beyerlein, William (1515) | Lost 1-2 | -171411 |
| top | record: 0-1 | new rating: 1411 | ||
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Locascio, Joseph (1513) | Lost 0-2 | -171463 |
| 2sealed | 188 | Wong, John (1482) | Lost 0-2 | -181445 |
| 3sealed | 216 | Malick, Alexandria (1464) | Lost 0-2 | -171428 |
| top | average opponent: 1486record: 0-3 | new rating: 1428 | ||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 327 | Girdner, Stephen (1500) | Lost 0-2 | -181482 |
| 2sealed | 532 | Whilden, Eric (1482) | Won 2-0 | +181500 |
| 3sealed | 381 | Burdick, Joel a (1501) | Lost 0-2 | -181482 |
| 4sealed | 446 | Skaggs, Tommy (1396) | Won 2-1 | +161498 |
| 5sealed | 406 | Henson, Steven R (1500) | Lost 0-2 | -181480 |
| top | average opponent: 1476record: 2-3 | new rating: 1480 | ||