Lehnert, Ken
Current rating: 1565
| Grand Prix Columbus 2004 (DST limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 79 | Jeffries, Thomas (1500) | Won 2-0 | +171545 |
| 2sealed | 94 | Adamowicz, Scott (1500) | Won 2-0 | +171562 |
| 3sealed | 55 | Merold, Josh (1538) | Won 2-0 | +181580 |
| 4sealed | 7 | Hoaen, Rich (1779) | Won 2-1 | +211601 |
| 5sealed | 3 | King, Stephen (1537) | Lost 1-2 | -191582 |
| 6sealed | 64 | Rivera, Israel (1559) | Won 2-0 | +181600 |
| 7sealed | 61 | Westfall, Matthew (1554) | Lost 1-2 | -191581 |
| 8sealed | 68 | Wolfman, Steven (1704) | Lost 0-2 | -161565 |
| top | average opponent: 1584record: 5-3 | new rating: 1565 | ||
| Grand Prix Detroit 2003 (Onslaught block) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 46 | Paulus, Joe (1503) | Won 2-0 | +191508 |
| 2block | 31 | Westfall, Matthew (1517) | Won 2-0 | +181526 |
| 3block | 66 | Hajduk, Filip (1500) | Lost 0-2 | -191507 |
| 4block | 132 | Leclair, Michael (1538) | Won 2-1 | +191526 |
| 5block | 47 | Cullum, Travis (1513) | Won 2-1 | +181544 |
| 6block | 63 | Glavin, Lucas (1652) | Lost 1-2 | -161528 |
| top | average opponent: 1537record: 4-2 | new rating: 1528 | ||
| Grand Prix Detroit 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 52 | Reinhold, Steve (1500) | Lost 1-2 | -181482 |
| 5sealed | 86 | Rex, Harold (1536) | Won 2-0 | +191501 |
| 6sealed | 24 | Andrews, David (1557) | Won 2-1 | +191520 |
| 7sealed | 29 | Pak, Dale (1562) | Lost 0-2 | -171503 |
| 8sealed | 57 | O'Mahoney-Schwartz, Daniel (1762) | Lost 1-2 | -141489 |
| top | average opponent: 1583record: 2-3 | new rating: 1489 | ||