Grantham, Michael
Current rating: 1406
Record: 3-9
| Grand Prix Kansas City 2013 (modern) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 201 | Kahl, Ethan (1500) | Lost 1-2 | -171400 |
| 2modern | 297 | Elwell, Aaron (1564) | Won 2-0 | +211421 |
| 3modern | 191 | Dobbins, Terrance (1501) | Won 2-1 | +201441 |
| 4modern | 46 | Rodriguez, Jysf (1460) | Lost 1-2 | -181423 |
| 5modern | 276 | Poage, Cory (1499) | Lost 0-2 | -171406 |
| top | average opponent: 1505record: 2-3 | new rating: 1406 | ||
| Grand Prix Paris 2011 (MBS limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 529 | Maurer, Tobias (1629) | Lost 0-2 | -151434 |
| 3sealed | 718 | Letellier, Jean (1449) | Lost 0-2 | -171417 |
| top | average opponent: 1539record: 0-2 | new rating: 1417 | ||
| Grand Prix Kansas City 2008 (ALA limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 102 | Heaser, Brent (1535) | Lost 0-2 | -171447 |
| 3sealed | 175 | Hankins, Chris (1500) | Won 2-1 | +191466 |
| 4sealed | 229 | Laskin, Lewis (1520) | Lost 0-2 | -171449 |
| top | average opponent: 1518record: 1-2 | new rating: 1449 | ||
| Grand Prix Kansas City 2003 (MRD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 117 | Harris, William (1490) | Lost 1-2 | -181482 |
| 2sealed | 170 | Grim, Nathan (1482) | Lost 1-2 | -181464 |
| top | average opponent: 1486record: 0-2 | new rating: 1464 | ||