Leff, Daniel
Current rating: 1434
Record: 12-16-1
| Grand Prix Toronto 2017 (HOU limited) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 311 | Gagnon, Stephan (1500) | Lost 0-2 | -171451 |
| 2sealed | 431 | Kilpatrick, Matthew (1464) | Won 2-0 | +181469 |
| 3sealed | 422 | Peng, Cheng (1501) | Lost 1-2 | -171452 |
| 4sealed | 563 | Mitchell, Randal (1481) | Lost 0-2 | -181434 |
| top | average opponent: 1487record: 1-3 | new rating: 1434 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 206 | Jelesnianski, Christopher (1482) | Lost 1-2 | -181444 |
| 2sealed | 500 | Hritz, Joseph (1482) | Won 2-0 | +191463 |
| 3sealed | 397 | Geiss, Andrew (1562) | Lost 1-2 | -161447 |
| 4sealed | 636 | VanGee, Robert (1419) | Lost 0-2 | -191428 |
| 5sealed | 687 | Yaffee, Zachary (1463) | Won 2-1 | +191447 |
| 6sealed | 611 | Speir, Bryan (1344) | Won 2-0 | +161463 |
| 7sealed | 387 | Dean, Norman (1501) | Won 2-1 | +191482 |
| 8sealed | 275 | Robinson, Bradley (1743) | Lost 1-2 | -141468 |
| top | average opponent: 1499record: 4-4 | new rating: 1468 | ||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 73 | Livingston, Denise (1208) | Won 2-1 | +121511 |
| 4modern | 765 | Pendergast, Thomas (1687) | Lost 0-2 | -141497 |
| 5modern | 225 | Jennings, Eric (1535) | Won 2-0 | +181515 |
| 6modern | 7 | Spurlock, Brian (1500) | Lost 1-2 | -181497 |
| 7modern | 246 | Byrum, John (1585) | Lost 0-2 | -161481 |
| 8modern | 443 | Carlson, John (1429) | Lost 1-2 | -191462 |
| top | average opponent: 1491record: 2-4 | new rating: 1462 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 721 | Tan, Tien (1444) | Draw 1-1 | 01461 |
| 2modern | 650 | Bernier, Alix (1500) | Won 2-1 | +181479 |
| 3modern | 540 | Gray, Chris (1471) | Won 2-0 | +181497 |
| 4modern | 288 | Hernandez, Kevin (1483) | Lost 1-2 | -181479 |
| 5modern | 540 | Church, Sam (1518) | Won 2-1 | +191498 |
| 6modern | 345 | Madsen, Benton (1515) | Won 2-0 | +181516 |
| 7modern | 211 | Browne, Nicholas (1556) | Lost 0-2 | -171499 |
| top | average opponent: 1498record: 4-2-1 | new rating: 1499 | ||
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 281 | Li, Junxun (1478) | Lost 0-2 | -181482 |
| 2standard | 564 | Parsons, Cory (1437) | Won 2-1 | +171499 |
| 3standard | 395 | McClellan, Jim (1477) | Lost 0-2 | -191480 |
| 4standard | 656 | Alaurin, Ryan (1396) | Lost 0-2 | -191461 |
| top | average opponent: 1447record: 1-3 | new rating: 1461 | ||