Harrienger, Mark P
Current rating: 1518
Record: 5-4
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 268 | Varshavsky, Misha (1500) | Lost 0-2 | -181482 |
| 2standard | 554 | Lennex, Thomas (1483) | Won 2-1 | +181500 |
| 3standard | 416 | Brown, Paul R (1520) | Lost 1-2 | -181482 |
| 4standard | 598 | Cunningham, Ryan (1481) | Won 2-0 | +181500 |
| 5standard | 483 | Dunks, Jess (1587) | Lost 1-2 | -161484 |
| 6standard | 480 | Fontaine, Jonathan (1398) | Won 2-1 | +161500 |
| 7standard | 365 | Davies, Thomas J (1501) | Won 2-0 | +181518 |
| 8standard | 235 | Rumski, Zac (1524) | Won 2-0 | +181536 |
| 9standard | 129 | Quintero, Pedro (1486) | Lost 1-2 | -181518 |
| average opponent: 1498record: 5-4 | new rating: 1518 | |||