Zimmerman, Zachary
Current rating: 1506
Record: 3-3
| Grand Prix San Diego 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 133 | Howlett, Lawrence (1500) | Won 2-1 | +181518 |
| 2modern | 100 | Roybal, Dane (1577) | Lost 0-2 | -171501 |
| 3modern | 240 | Salamat, Amir (1499) | Won 2-0 | +181519 |
| 4modern | 137 | Selivra, Andrej (1688) | Won 2-0 | +211540 |
| 5modern | 124 | Zunter, Brian (1750) | Lost 0-2 | -141526 |
| 6modern | 160 | Davis, Mike (1423) | Lost 0-2 | -201506 |
| average opponent: 1573record: 3-3 | new rating: 1506 | |||