Hayama, Jun
Current rating: 1464
Record: 1-3
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 27 | Jacobson, Matthew (1504) | Lost 1-2 | -181482 |
| 2sealed | 466 | Zaro, Corey (1482) | Lost 1-2 | -181464 |
| 3sealed | 272 | Stoup, Jonathan (1478) | Won 2-0 | +181482 |
| 4sealed | 596 | Mercuri, Alex (1485) | Lost 1-2 | -181464 |
| average opponent: 1487record: 1-3 | new rating: 1464 | |||