Michalczak, Joshua
Current rating: 1517
Record: 4-3
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 83 | Robertson, Khary (1500) | Won 2-0 | +181518 |
| 2sealed | 157 | Chan, Royal (1518) | Lost 1-2 | -181500 |
| 3sealed | 345 | Merced, Davis (1444) | Lost 1-2 | -191481 |
| 4sealed | 513 | Sherman, Matthew (1482) | Won 2-0 | +181499 |
| 5sealed | 172 | Roig, Ben (1498) | Won 2-0 | +181517 |
| 6sealed | 354 | Blenkinsop, Robert (1521) | Won 2-0 | +181535 |
| 7sealed | 262 | Escobedo, Mario (1528) | Lost 0-2 | -181517 |
| average opponent: 1499record: 4-3 | new rating: 1517 | |||