Griggs, Donald
Current rating: 1410
Record: 4-9
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 214 | Pierson, Zachary (1401) | Lost 0-2 | -191460 |
| 2standard | 359 | Seeley, Bob (1482) | Lost 0-2 | -181442 |
| 3standard | 443 | Moore, Skyler (1465) | Won 2-0 | +191461 |
| 4standard | 366 | Upton, Andrew (1606) | Lost 0-2 | -161445 |
| 5standard | 421 | King, Eric (1455) | Lost 1-2 | -171428 |
| 6standard | 372 | Roberts, Scarlett (1445) | Lost 0-2 | -181410 |
| average opponent: 1476record: 1-5 | new rating: 1410 | |||
| Grand Prix Memphis 2018 (RIX standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 195 | Weary, Jimmy (1500) | Lost 0-2 | -181482 |
| 2standard | 384 | Cook, Jody (1425) | Lost 1-2 | -191463 |
| 3standard | 490 | Myska, Chase (1454) | Lost 0-2 | -181445 |
| 4standard | 511 | Weaver, Antoinette (1443) | Won 2-0 | +181463 |
| 5standard | 457 | Parker, Lindsey (1469) | Won 2-0 | +181481 |
| 6standard | 371 | Ratliff, Dane (1481) | Won 2-1 | +181499 |
| 7standard | 302 | Styers, Roger (1417) | Lost 1-2 | -201479 |
| average opponent: 1456record: 3-4 | new rating: 1479 | |||