Grubbs, Ralph
Current rating: 1411
Record: 2-7
| Grand Prix Kansas City 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 202 | Franks, Zach (1535) | Lost 0-2 | -171483 |
| 2modern | 344 | Dobbins, Terrance (1483) | Lost 1-2 | -181465 |
| 3modern | 392 | Creason, randy (1464) | Won 2-0 | +181483 |
| 4modern | 422 | Hermstedt, Aaron (1482) | Lost 1-2 | -181465 |
| 5modern | 405 | Consolver, Kyle (1464) | Lost 1-2 | -181447 |
| 6modern | 345 | Shafer, Kyle (1430) | Lost 1-2 | -191428 |
| 7modern | 305 | Lothamer, Nathan (1446) | Won 2-0 | +191447 |
| 8modern | 257 | Wolff, Meghan (1446) | Lost 0-2 | -181429 |
| 9modern | 213 | HART, SHANA (1426) | Lost 1-2 | -181411 |
| average opponent: 1464record: 2-7 | new rating: 1411 | |||