Jeffers, Michael
Current rating: 1488
Record: 14-13 (GP) / 2-5 (professional)
| Grand Prix Minneapolis 2001 (Invasion block) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 121 | Kowal, Brian (1472) | Lost 1-2 | -181489 |
| 2block | 119 | Pelcak, John (1482) | Won 2-0 | +181507 |
| 3block | 135 | Standiford, Matthew (1500) | Won 2-1 | +181525 |
| 4block | 94 | Castro, Robert (1534) | Won 2-0 | +181543 |
| 5block | 60 | Trzpuc, Blake (1535) | Lost 0-2 | -181525 |
| 6block | 94 | Hall, Jonathan (1518) | Lost 0-2 | -191506 |
| 7block | 95 | Herzberg, Scott (1480) | Lost 1-2 | -181488 |
| top | average opponent: 1503record: 3-4 | new rating: 1488 | ||
| Grand Prix Detroit 2001 (PLS limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 69 | Mueller, Graham (1500) | Won 2-0 | +181524 |
| 2sealed | 87 | Pergola, Tom (1518) | Won 2-1 | +171541 |
| 3sealed | 10 | Weber, Joe (1640) | Lost 1-2 | -161525 |
| 4sealed | 115 | Janky, Gabriel (1517) | Won 2-1 | +181543 |
| 5sealed | 109 | Fenwick, Brian (1575) | Lost 1-2 | -171526 |
| 6sealed | 147 | Moisson, Adam (1516) | Lost 0-2 | -191507 |
| top | average opponent: 1544record: 3-3 | new rating: 1507 | ||
| Grand Prix Boston 2001 (PLS limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 170 | Lewis, Charles (1500) | Won 2-1 | +181482 |
| 2sealed | 76 | Blake, Matthew (1517) | Won 2-1 | +191501 |
| 3sealed | 59 | Tsang, Gabriel (1655) | Lost 0-2 | -151486 |
| 4sealed | 116 | Chandler, Andy (1520) | Won 2-0 | +181504 |
| 5sealed | 87 | Paschover, Marc (1552) | Lost 1-2 | -171487 |
| 6sealed | 107 | Vasiladiotis, Joseph (1517) | Won 2-1 | +191506 |
| top | average opponent: 1543record: 4-2 | new rating: 1506 | ||
| Pro Tour Chicago 2000 (INV standard) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 114 | Turian, Michael (1721) | Lost 1-2 | -141485 |
| 2standard | 123 | Jensen, Niels Sanders (1713) | Won 2-1 | +221507 |
| 3standard | 111 | Ruggiero, Marco (1513) | Lost 1-2 | -181489 |
| 4standard | 124 | Ruel, Olivier (1800) | Lost 1-2 | -121477 |
| 5standard | 129 | Vienneau, Matthew (1781) | Lost 0-2 | -131464 |
| 6standard | 123 | Hegstad, Brian (1499) | Lost 0-2 | -171447 |
| 7standard | 118 | Connelly-Hansen, Allan (1372) | Won 2-0 | +171464 |
| top | average opponent: 1628record: 2-5 | new rating: 1464 | ||
| Grand Prix Philadelphia 2000 (extended) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 138 | Iglesias, John (1500) | Lost 0-0 | -181499 |
| 2extended | 198 | Goodsell, Matthew (1481) | Won 0-0 | +171516 |
| 3extended | 174 | Rauseo, Matthew (1540) | Won 0-0 | +191535 |
| 4extended | 129 | Popkave, Daniel (1515) | Lost 0-0 | -191516 |
| 5extended | 160 | Miller, Stephen (1558) | Lost 0-0 | -171499 |
| top | average opponent: 1519record: 2-3 | new rating: 1499 | ||
| Grand Prix Kansas City 1999 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 156 | Forshee, David (1500) | Won 0-0 | +181518 |
| 5extended | 96 | Clarkson, Wesley (1463) | Lost 0-0 | -191499 |
| 6extended | 93 | Damon, Jeremy (1499) | Won 0-0 | +181517 |
| top | average opponent: 1487record: 2-1 | new rating: 1517 | ||