HATTNHER, PEDRO D
Current rating: 1566
Record: 10-7
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 153 | Jesus, Erick C (1500) | Won 2-0 | +181521 |
| 2sealed | 98 | Giordano, Bruno (1518) | Won 2-0 | +181539 |
| 3sealed | 88 | Romao, Carlos (1711) | Won 2-0 | +211560 |
| 4sealed | 40 | Ferrareze da Cruz, Guilherme Francisco (1554) | Won 2-0 | +181578 |
| 5sealed | 11 | Silveira, Pedro Henrique Bou (1631) | Won 2-1 | +191597 |
| 6sealed | 12 | da Fonseca, Bruno (1584) | Won 2-0 | +181615 |
| 7sealed | 1 | Gennari Souza, Juliano (1728) | Lost 0-2 | -161599 |
| 8sealed | 12 | Ramos Modesto, Danilo (1637) | Lost 1-2 | -171582 |
| 9sealed | 47 | Damian, Nicholas (1695) | Lost 0-2 | -161566 |
| average opponent: 1618record: 6-3 | new rating: 1566 | |||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 77 | Quintero, Pedro (1389) | Lost 0-2 | -201480 |
| 2standard | 534 | Glotfelty, Matthew (1482) | Lost 0-2 | -181462 |
| 3standard | 598 | Barnes, Kyle (1463) | Won 2-1 | +181480 |
| 4standard | 551 | Eyler, Kyle (1484) | Won 2-0 | +181498 |
| 5standard | 439 | Daniels, John R (1499) | Won 2-1 | +181516 |
| 6standard | 351 | Downs, Austin (1579) | Lost 1-2 | -171499 |
| 7standard | 361 | Taulbee, Brad (1726) | Won 2-0 | +221521 |
| 8standard | 234 | Schroeder, Paul (1517) | Lost 0-2 | -181503 |
| average opponent: 1518record: 4-4 | new rating: 1503 | |||