Heffern, Mike
Current rating: 1569
Record: 9-4-1 (GP) / 8-12-2 (professional)
| Pro Tour Los Angeles 2001 (INV rochester) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 150 | Johns, Scott (1749) | Lost 1-2 | -141545 |
| 2rochester | 70 | Hoaen, Rich (1485) | Won 2-1 | +171562 |
| 3rochester | 60 | Komiya, Tadayoshi (1613) | Won 2-1 | +191581 |
| 4rochester | 150 | Levy, Raphael (1893) | Lost 1-2 | -131568 |
| 5rochester | 123 | Maij, Rosario (1597) | Won 2-0 | +191587 |
| 6rochester | 39 | Budde, Kai (2000) | Lost 1-2 | -111576 |
| 8rochester | 66 | Higashino, Masayuki (1858) | Lost 0-2 | -131563 |
| 9rochester | 78 | Vienneau, Matthew (1740) | Won 2-0 | +211584 |
| 10rochester | 47 | Johnson, Andrew (1628) | Won 2-0 | +191603 |
| 11rochester | 59 | Asbo, Torgeir (1602) | Lost 1-2 | -181585 |
| 12rochester | 53 | Hubble, Bryan (1717) | Lost 0-2 | -161569 |
| top | average opponent: 1717record: 5-6 | new rating: 1569 | ||
| Pro Tour New York 2000 (Masques block) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 151 | Johns, Scott (1640) | Draw 1-1 | +21569 |
| 2block | 84 | Cowley, Bruce (1736) | Lost 0-2 | -151554 |
| 3block | 117 | Koskimaki, Antti (1487) | Won 2-1 | +161570 |
| 4block | 72 | Fehr, Christian (1538) | Won 2-0 | +181588 |
| 5block | 46 | Konstanczer, Andre (1765) | Draw 1-1 | +31591 |
| 6block | 69 | Lo Moro, Raffaele (1803) | Lost 0-2 | -141577 |
| 7block | 86 | Guillaumin, Bertrand (1609) | Lost 0-2 | -181559 |
| top | average opponent: 1654record: 2-3-2 | new rating: 1559 | ||
| Pro Tour Chicago 1999 (extended) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 76 | Farkas, Benjamin (1760) | Won 2-0 | +211624 |
| 2extended | 66 | Van Cleave, Trey (1697) | Lost 0-2 | -171607 |
| 3extended | 113 | MacDonald, Andrew [AUS] (1500) | Lost 0-2 | -201587 |
| 4extended | 96 | Cuter, Massimo (1483) | Lost 0-2 | -201567 |
| top | average opponent: 1610record: 1-3 | new rating: 1567 | ||
| Grand Prix Memphis 1999 (Urza's block) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 2 | Beck, Scott (1465) | Won 0-0 | +181500 |
| 5block | 10 | Hooper, Geoff (1572) | Won 0-0 | +191519 |
| 6block | 4 | Pustilnik, Michael (1612) | Won 0-0 | +201539 |
| 7block | 1 | Jafari, David (1559) | Draw 0-0 | 01539 |
| 8block | 3 | Jafari, David (1559) | Won 0-0 | +181557 |
| 9block | 2 | Pacheco, Marc (1614) | Lost 0-0 | -171540 |
| 10block | 6 | Price, David (1710) | Won 0-0 | +221562 |
| 11block | 3 | James, Carl (1623) | Won 0-0 | +191581 |
| 12block | 3 | Rauseo, Matthew (1581) | Lost 0-0 | -181563 |
| 13block | 5 | Pippin, Russell (1626) | Won 0-0 | +191582 |
| Qblock | Jafari, David (1599) | Won 2-1 | +181600 | |
| Sblock | Norton, Matthew (1651) | Won 2-1 | +191619 | |
| Fblock | Pustilnik, Michael (1719) | Lost 1-3 | -161603 | |
| top | average opponent: 1607record: 9-3-1 | new rating: 1603 | ||
| Grand Prix Kansas City 1999 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 61 | Clinkenbeard, Adam (1500) | Lost 0-0 | -181482 |
| top | record: 0-1 | new rating: 1482 | ||