Benefield, Eiko
Current rating: 1572
Record: 16-14
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1182 | Clinard, Jeffrey (1600) | Won 2-0 | +181614 |
| 2sealed | 123 | Morgan, David (1575) | Lost 1-2 | -191595 |
| 3sealed | 338 | Gould, Darrell (1465) | Lost 1-2 | -201575 |
| 4sealed | 474 | Capasso, Keith (1481) | Won 2-0 | +161591 |
| 5sealed | 347 | Kaplan, Giana (1512) | Lost 1-2 | -191572 |
| top | average opponent: 1527record: 2-3 | new rating: 1572 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 198 | Swen, Hawnlay (1459) | Lost 1-2 | -191495 |
| 2sealed | 363 | Fleshman, Josh (1424) | Won 2-0 | +171512 |
| 3sealed | 404 | Tait, Ryan (1498) | Won 2-0 | +181530 |
| 4sealed | 314 | Weigle, Sean (1795) | Lost 0-2 | -131517 |
| 5sealed | 279 | Kassari, John (1858) | Won 2-1 | +241541 |
| 6sealed | 301 | Min, Max (1496) | Won 2-0 | +171558 |
| 7sealed | 192 | Sommer, Zachary (1647) | Won 2-1 | +191577 |
| 8sealed | 150 | Biaggi, Andrea (1648) | Won 2-0 | +201597 |
| 9sealed | 80 | O'Brien, Chris (1852) | Lost 0-2 | -141583 |
| 10draft | 76 | Montoya, Brandon (2050) | Lost 1-2 | -101573 |
| 11draft | 165 | Fernandez Torres, Alvaro (1637) | Won 2-1 | +191592 |
| 12draft | 105 | Blue, Vivienne (1666) | Won 2-0 | +201612 |
| 13draft | 162 | Rashid, Taimur (1738) | Lost 0-2 | -161596 |
| top | average opponent: 1675record: 8-5 | new rating: 1596 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 62 | Weigman, Gary (1477) | Won 2-1 | +171522 |
| 4sealed | 11 | Tao, Jiachen (1761) | Won 2-0 | +221544 |
| 5sealed | 4 | Gifford, Sean (1630) | Lost 0-2 | -161528 |
| 6sealed | 38 | Henry, Brenton (1658) | Lost 0-2 | -161512 |
| 7sealed | 66 | Ortiz, Lance (1606) | Won 2-1 | +201532 |
| 8sealed | 51 | Bi, Vincent (1559) | Lost 1-2 | -181514 |
| top | average opponent: 1615record: 3-3 | new rating: 1514 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 42 | Hogan, William (1536) | Won 2-1 | +191519 |
| 3sealed | 89 | Lagace, Dennis (1535) | Won 2-1 | +181537 |
| 4sealed | 199 | Headley, David (1557) | Lost 0-2 | -181519 |
| 5sealed | 210 | Lufkin, Blake (1539) | Won 2-0 | +191538 |
| 6sealed | 218 | Ross, Jonathan (1725) | Lost 1-2 | -151523 |
| 7sealed | 218 | Munk, Andreas (1496) | Lost 0-2 | -181505 |
| top | average opponent: 1565record: 3-3 | new rating: 1505 | ||