Tatum, Jeffrey
Current rating: 1451
Record: 6-9
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 35 | Holmes, Kevin (1482) | Won 2-0 | +181481 |
| 2extended | 90 | garcia, jaycee (1516) | Won 2-1 | +191500 |
| 3extended | 43 | Beardsley, Ted (1491) | Won 2-0 | +181518 |
| 4extended | 12 | Ashford, Marshall (1642) | Lost 1-2 | -161502 |
| 5extended | 127 | Renderos, Claro (1519) | Lost 1-2 | -181484 |
| 6extended | 176 | Petterson, David (1521) | Lost 0-2 | -171467 |
| 7extended | 209 | McCarthy, Chris (1505) | Lost 1-2 | -171450 |
| 8extended | 162 | Hecker, Caleb (1481) | Won 2-0 | +181468 |
| 9extended | 123 | Layne, Zachary (1501) | Lost 0-2 | -171451 |
| average opponent: 1518record: 4-5 | new rating: 1451 | |||
| Grand Prix Memphis 1999 (Urza's block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 34 | Ely Jr., Charles (1500) | Won 0-0 | +181518 |
| 2block | 71 | McConnell, Alex (1466) | Lost 0-0 | -191499 |
| 3block | 94 | George, Brent (1500) | Lost 0-0 | -181481 |
| 4block | 111 | Adkins, Joshua (1482) | Won 0-0 | +181499 |
| 5block | 105 | Kissinger, Steve (1484) | Lost 0-0 | -181481 |
| 6block | 113 | Nunn, Tio (1482) | Lost 0-0 | -181463 |
| average opponent: 1486record: 2-4 | new rating: 1463 | |||