Prendergast, Owen
Current rating: 1462
Record: 5-7
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 238 | Wolff, Neil (1610) | Lost 1-2 | -151465 |
| 2standard | 378 | Kim, Kee Sung (1431) | Won 2-1 | +171482 |
| 3standard | 416 | Leasak, Blake (1499) | Won 2-0 | +181500 |
| 4standard | 194 | Mascarenas, Demetrio (1482) | Lost 1-2 | -181482 |
| 5standard | 373 | Ewing, Christopher (1383) | Lost 0-2 | -201462 |
| average opponent: 1481record: 2-3 | new rating: 1462 | |||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 116 | Yarger, David (1500) | Won 2-0 | +181518 |
| 2standard | 160 | Otteson, Whitney (1504) | Won 2-1 | +181536 |
| 3standard | 177 | Marklyn, Tyler (1669) | Lost 0-2 | -161520 |
| 4standard | 404 | Malme, Braden (1518) | Lost 1-2 | -181502 |
| 5standard | 432 | Bass, Anthony (1360) | Won 2-1 | +161518 |
| 6standard | 342 | Hayden, Maxwell (1454) | Lost 0-2 | -201498 |
| 7standard | 467 | Garrison, Nick (1498) | Lost 1-2 | -181480 |
| average opponent: 1500record: 3-4 | new rating: 1480 | |||