Pierson, Hayes
Current rating: 1492
Record: 4-5
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 29 | Yanity, Jason (1563) | Won 2-0 | +191528 |
| 2legacy | 271 | Bell, Stephen (1518) | Won 2-1 | +181546 |
| 3legacy | 40 | Stewart, Perry (1557) | Lost 1-2 | -181528 |
| 4legacy | 360 | Kvartek, Chris (1601) | Lost 1-2 | -171511 |
| 5legacy | 621 | Warren, Chris (1417) | Lost 0-2 | -191492 |
| average opponent: 1531record: 2-3 | new rating: 1492 | |||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 962 | Hackler, Joshua (1500) | Won 2-0 | +181518 |
| 2sealed | 863 | Griffin, Matthew [USA] (1833) | Won 2-0 | +241542 |
| 3sealed | 761 | Adams, Sean (1429) | Lost 1-2 | -201522 |
| 4sealed | 848 | Eason, Brian (1825) | Lost 0-2 | -131509 |
| average opponent: 1647record: 2-2 | new rating: 1509 | |||