Johnson, Koran
Current rating: 1584
Record: 11-6-1
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 254 | Mantey, Tyler (1716) | Lost 0-2 | -151539 |
| 2standard | 518 | Miller, Byron (1482) | Won 2-1 | +171556 |
| 3standard | 252 | Gertz, Stephen M (1503) | Won 2-1 | +171573 |
| 4standard | 294 | Paddock, Timmy M (1518) | Lost 1-2 | -191554 |
| 5standard | 514 | Amoroso, Joseph (1500) | Won 2-1 | +171571 |
| 6standard | 306 | Hoffmann, James W (1527) | Lost 1-2 | -191552 |
| 7standard | 350 | Lancaster, Nicholas (1506) | Won 2-0 | +171569 |
| 8standard | 267 | Woo, Paul (1519) | Draw 1-1 | -11568 |
| 9standard | 192 | League, Charles (1452) | Won 2-0 | +161584 |
| average opponent: 1525record: 5-3-1 | new rating: 1584 | |||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 283 | Sauve, Nicholas (1500) | Lost 0-2 | -181482 |
| 2standard | 368 | Cullen, Joshua R (1445) | Lost 0-2 | -191463 |
| 3standard | 389 | Kincaid, Joel (1467) | Won 2-0 | +181481 |
| 4standard | 389 | Lucas, Christopher (1482) | Won 2-1 | +181499 |
| 5standard | 223 | Rasmussen, Jake (1498) | Won 2-1 | +181517 |
| 6standard | 236 | Wooten, Chris (1520) | Won 2-1 | +181535 |
| 7standard | 132 | Carr, Ezra (1549) | Won 2-1 | +191554 |
| 8standard | 96 | Bologna, Will (1547) | Won 2-1 | +181572 |
| 9standard | 59 | Krug, Andrew (1599) | Lost 0-2 | -181554 |
| average opponent: 1512record: 6-3 | new rating: 1554 | |||