Joiner, Matthew
Current rating: 1449
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 432 | Ducommun, Deven (1499) | Won 2-0 | +181473 |
| 2standard | 234 | Combs, Mike (1518) | Lost 0-2 | -171456 |
| 3standard | 418 | Abrahams, Noah (1500) | Won 2-0 | +191475 |
| 4standard | 560 | Gu, Jian (1771) | Lost 0-2 | -131462 |
| 5standard | 492 | Burns, Richard (1572) | Lost 1-2 | -161446 |
| 6standard | 704 | Van Der List, Michel (1482) | Won 2-1 | +191465 |
| 7standard | 480 | Belknap, Randy (1565) | Lost 0-2 | -161449 |
| top | average opponent: 1558record: 3-4 | new rating: 1449 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 128 | Dungan, Michael (1465) | Lost 1-2 | -181446 |
| 2sealed | 327 | Vu, Simon (1482) | Won 2-1 | +191465 |
| 3sealed | 200 | Wise, Nicholas (1697) | Won 2-1 | +221487 |
| 4sealed | 139 | Downing, Steve (1642) | Lost 0-2 | -151472 |
| 5sealed | 208 | Shibla, Devyn (1500) | Lost 0-2 | -171455 |
| top | average opponent: 1557record: 2-3 | new rating: 1455 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 506 | Posegate, Tom (1519) | Lost 1-2 | -181482 |
| 2standard | 496 | Friedman, Jax (1482) | Lost 0-2 | -181464 |
| 3standard | 745 | Cravy, Justin (1464) | Won 2-1 | +181482 |
| 4standard | 663 | Holman, Jed (1481) | Won 2-0 | +181500 |
| 5standard | 485 | Huckins, Kevin (1504) | Lost 1-2 | -181482 |
| 6standard | 550 | Parham, Dominique (1485) | Lost 1-2 | -181464 |
| top | average opponent: 1489record: 2-4 | new rating: 1464 | ||