Sperka, John Thor
Current rating: 1462
Record: 1-3-2
| Grand Prix Memphis 2018 (RIX standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 172 | Garcia, Eddy (1372) | Draw 1-1 | -21498 |
| 2standard | 245 | Marsh, Dan (1502) | Won 2-0 | +181516 |
| 3standard | 247 | Lanasa, James (1517) | Lost 1-2 | -181498 |
| 4standard | 363 | Lesher, Jeremy (1516) | Lost 0-2 | -181480 |
| 5standard | 421 | Ellis, Zechariah (1506) | Draw 1-1 | +11481 |
| 6standard | 400 | Lacey, Jake (1436) | Lost 0-2 | -191462 |
| average opponent: 1475record: 1-3-2 | new rating: 1462 | |||