Lack, Cory
Current rating: 1639
Record: 5-7 (GP) / 10-6 (professional)
| Pro Tour Journey into Nyx (Theros block) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 83 | Burkhart, Corey (1865) | Lost 1-2 | -111472 |
| 2draft | 167 | Budde, Kai (2083) | Won 2-1 | +281500 |
| 3draft | 115 | Bjorklund, Rasmus (1963) | Lost 0-2 | -101490 |
| 4block | 141 | Medvedev, Dmitry (1622) | Won 2-1 | +201510 |
| 5block | 76 | Baragatti, Jimmy (1520) | Won 2-0 | +181528 |
| 6block | 49 | Mackl, Valentin (2063) | Won 2-0 | +271555 |
| 7block | 34 | Mcclain, Josh (1937) | Won 2-0 | +251580 |
| 8block | 19 | Van Fleet, Adam (1750) | Won 2-0 | +211601 |
| 9draft | 46 | Karsten, Frank (2008) | Won 2-0 | +251626 |
| 10draft | 21 | Pottenger, Sean (1562) | Lost 0-2 | -191607 |
| 11draft | 22 | Alkio, Anssi (1952) | Lost 1-2 | -121595 |
| 12block | 41 | Mihara, Makihito (1870) | Won 2-1 | +231618 |
| 13block | 22 | Sanchez Garrido, Ricardo (1791) | Won 2-1 | +211639 |
| 14block | 12 | Moral, Carlos (2037) | Lost 0-2 | -111628 |
| 15block | 24 | Jensen, William (2130) | Lost 0-2 | -101618 |
| 16block | 35 | Muhlbock, Marc (1802) | Won 2-1 | +211639 |
| top | average opponent: 1872record: 10-6 | new rating: 1639 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 201 | Smith, Joseph (1499) | Lost 1-2 | -181473 |
| 5standard | 137 | Kelso, Mark (1490) | Won 2-0 | +181491 |
| 6standard | 70 | Nunkin, Matthew (1539) | Won 2-1 | +191510 |
| 7standard | 47 | Folinus, Jeff (1702) | Lost 0-2 | -141496 |
| 8standard | 108 | Tautic, Raymond (1819) | Lost 1-2 | -131483 |
| top | average opponent: 1610record: 2-3 | new rating: 1483 | ||
| Grand Prix Montreal 2011 (M12 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 488 | Inda, Joshua (1489) | Lost 1-2 | -181482 |
| 2sealed | 506 | Painchaud, Steven (1482) | Won 2-1 | +181500 |
| 3sealed | 469 | McInnis, Myles (1520) | Won 2-1 | +181518 |
| 4sealed | 459 | Rosman-Simionescu, Tobias (1640) | Won 2-0 | +201538 |
| 5sealed | 441 | Liquidano, Jairo (1562) | Lost 0-2 | -171521 |
| 6sealed | 446 | Vidugiris, Gaudenis (1870) | Lost 1-2 | -121509 |
| 7sealed | 484 | Hollar, Matt (1499) | Lost 0-2 | -181491 |
| top | average opponent: 1580record: 3-4 | new rating: 1491 | ||