Vizzacco, Mark
Current rating: 1672
Record: 30-21-1
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1586 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 52 | McGregor, Duncan (1630) | Won 2-0 | +181604 |
| 5sealed | 17 | Boehm, Greg (1593) | Won 2-0 | +181622 |
| 6sealed | 13 | Westfall, Matthew (1789) | Won 2-0 | +211643 |
| 7sealed | 4 | Rood, David (1854) | Draw 1-1 | +41647 |
| 8sealed | 4 | Daoust, Guillaume (1726) | Won 2-0 | +191666 |
| 9draft | 13 | Moreno, William (1729) | Lost 1-2 | -161650 |
| 10draft | 5 | Chambers, Adam (1866) | Won 2-0 | +211671 |
| 11draft | 21 | Breau, Josh (1574) | Won 2-0 | +171688 |
| 12draft | 23 | Davis, Robb (1633) | Won 2-1 | +171705 |
| 13draft | 6 | Fiorillo, John (1972) | Lost 1-2 | -141691 |
| 14draft | 10 | Jiang, Jay (1622) | Lost 0-2 | -191672 |
| top | average opponent: 1726record: 7-3-1 | new rating: 1672 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1606 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 98 | Westfall, Matthew (1623) | Won 2-0 | +191625 |
| 3sealed | 44 | Hague, James (1536) | Lost 0-2 | -201605 |
| 4sealed | 91 | Kincaid, Tim (1515) | Lost 1-2 | -191586 |
| top | average opponent: 1558record: 1-2 | new rating: 1586 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1577 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 29 | Esposito, John (1518) | Won 2-0 | +171594 |
| 3block | 151 | Gauthier, Bobby (1500) | Lost 0-2 | -201574 |
| 4block | 234 | Boonyam, Sagulabhat (1520) | Won 2-0 | +171591 |
| 5block | 110 | Kaufman, Peter (1537) | Won 2-0 | +171608 |
| 6block | 121 | Selinger, Rick (1575) | Won 2-0 | +181626 |
| 7block | 77 | Spotts, Steven (1578) | Won 2-0 | +171643 |
| 8block | 44 | Arthurs, Marshall (1479) | Lost 1-2 | -211622 |
| 9block | 32 | Mayer, D.j. (1539) | Won 2-1 | +171639 |
| 10block | 32 | Berkowitz, Jordan (1936) | Lost 0-2 | -131626 |
| 11block | 57 | Peacock, Robert (1554) | Lost 0-2 | -201606 |
| top | average opponent: 1574record: 6-4 | new rating: 1606 | ||
| Grand Prix Columbus 2004 (DST limited) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 4 | Doernberger, Bill (1536) | Won 2-0 | +171620 |
| 4sealed | 19 | Stavola, Kate (1578) | Lost 0-2 | -191601 |
| 5sealed | 119 | Benanzer, Andrew S (1584) | Lost 0-2 | -181583 |
| 6sealed | 144 | Burnette, Christopher (1518) | Won 2-0 | +161599 |
| 7sealed | 112 | Jesuale, Peter (1531) | Won 2-0 | +171616 |
| 8sealed | 73 | Gerth, Jonathan (1559) | Lost 1-2 | -191597 |
| 9sealed | 85 | Morrison, Michael (1498) | Lost 0-2 | -201577 |
| top | average opponent: 1543record: 3-4 | new rating: 1577 | ||
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1569 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 118 | Zhornitsky, Vlad (1518) | Won 2-0 | +171586 |
| 3sealed | 74 | Radford, Robert (1536) | Won 2-1 | +181604 |
| 4sealed | 33 | Breider, Aaron (1582) | Lost 1-2 | -191585 |
| 5sealed | 120 | Labenski, Michael (1537) | Won 2-0 | +171602 |
| 6sealed | 40 | Farr, Errol (1556) | Won 2-0 | +171619 |
| 7sealed | 17 | Aden, Eli (1650) | Won 2-1 | +191638 |
| 8sealed | 27 | Jordan, Paul (1617) | Lost 1-2 | -181620 |
| 9sealed | 23 | Fitch, Britt (1687) | Lost 1-2 | -171603 |
| top | average opponent: 1585record: 5-3 | new rating: 1603 | ||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Harris, William (1500) | Won 2-0 | +181518 |
| 2sealed | 121 | Bongiovanni, Mauro (1647) | Won 2-1 | +201538 |
| 3sealed | 49 | Rollins, Derek (1478) | Won 2-0 | +171555 |
| 4sealed | 31 | Mullins, Stephen (1554) | Won 2-0 | +181573 |
| 5sealed | 23 | Tsai, Tony (1610) | Won 2-1 | +191592 |
| 6sealed | 6 | Braden, C. Uriah (1602) | Won 2-1 | +181610 |
| 7sealed | 4 | Haim, Christophe (2022) | Lost 1-2 | -111599 |
| 8sealed | 20 | Sullivan, Robert NMI (1574) | ID | 01599 |
| 9rochester | 25 | Rodemann, Dan (1605) | Lost 0-2 | -181581 |
| 10rochester | 7 | Miller, Stephen (1559) | Lost 0-2 | -181563 |
| 11rochester | 10 | Mowshowitz, Zvi (1894) | Won 2-1 | +241587 |
| 12rochester | 10 | Low, Devin (1652) | Lost 0-2 | -171570 |
| 13rochester | 4 | Radzville, Rick (1585) | Won 2-0 | +181588 |
| 14rochester | 12 | Pacifico, Andrew (1544) | Lost 1-2 | -191569 |
| top | average opponent: 1631record: 8-5-1 | new rating: 1569 | ||