Schamun, Donald
Current rating: 1531
Record: 15-15-2 (GP) / 3-4 (professional)
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 257 | Black, Douglas (1500) | Lost 1-2 | -181473 |
| 2sealed | 270 | Pittman, Casey (1481) | Won 2-0 | +181491 |
| 3sealed | 366 | Van Doren, Peter (1373) | Lost 1-2 | -201471 |
| 4sealed | 387 | Liazuk, Michael (1448) | Won 2-0 | +171488 |
| 5sealed | 222 | Kullen, Matthew (1635) | Won 2-1 | +211509 |
| 6sealed | 151 | Cummins, Jack (1434) | Won 2-1 | +171526 |
| 7sealed | 152 | Whyte, Ailsa (1636) | Won 2-0 | +201546 |
| 8sealed | 128 | Patterson, Ryan (1753) | Lost 0-2 | -151531 |
| top | average opponent: 1533record: 5-3 | new rating: 1531 | ||
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 106 | Dunn, Kenneth (1500) | Lost 0-2 | -181491 |
| top | record: 0-1 | new rating: 1491 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 599 | Pulchinski, Ethan (1500) | Won 2-0 | +191470 |
| 2sealed | 194 | Darnall, Matthew (1568) | Won 2-1 | +191489 |
| 3sealed | 62 | Sprague, Austin (1540) | Won 2-1 | +191508 |
| 4sealed | 50 | Berrios, Stephen (2098) | Lost 0-2 | -81500 |
| 5sealed | 256 | Jordan, Benjamin (1536) | Won 2-0 | +191519 |
| 6sealed | 170 | Guild, Jacob (1737) | Lost 1-2 | -141505 |
| 7sealed | 180 | Olson, Nathan (1557) | Won 2-1 | +191524 |
| 8sealed | 139 | de Diego, Pedro (1706) | Lost 1-2 | -151509 |
| top | average opponent: 1655record: 5-3 | new rating: 1509 | ||
| Pro Tour San Diego 2002 (ODY rochester) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 29 | Dominguez Ramos, Alejandro (1638) | Lost 1-2 | -151444 |
| 2rochester | 55 | Simmons, Jeremy (1436) | Won 2-1 | +181462 |
| 3rochester | 45 | Okamoto, Jin (1757) | Lost 1-2 | -131449 |
| 4rochester | 129 | Barltrop, Steve (1403) | Lost 0-2 | -191430 |
| 5rochester | 32 | Perez, David [ESP] (1481) | Won 2-1 | +191449 |
| 6rochester | 103 | Daley, Jamie (1433) | Won 2-1 | +181467 |
| 7rochester | 95 | Weidemann, Roman (1574) | Lost 0-2 | -161451 |
| top | average opponent: 1532record: 3-4 | new rating: 1451 | ||
| Grand Prix Minneapolis 2001 (Invasion block) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 42 | Kurth, Philip (1500) | Draw 1-1 | +11435 |
| 2block | 102 | Dong, Richard 2 (1500) | Draw 1-1 | +21437 |
| 3block | 143 | Roush, Shawn (1470) | Won 2-0 | +181455 |
| 4block | 118 | Howlano, Dan (1499) | Lost 0-1 | -171438 |
| 5block | 140 | Amaral, Chris (1482) | Won 2-0 | +191457 |
| 6block | 108 | Balser, Russell (1518) | Won 1-0 | +191476 |
| 7block | 79 | Rodewald, Douglas (1519) | Lost 1-2 | -171459 |
| top | average opponent: 1498record: 3-2-2 | new rating: 1459 | ||
| Grand Prix Detroit 2001 (PLS limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 67 | Wilson, Mike W (1519) | Lost 0-2 | -181466 |
| 3sealed | 130 | Croft, Michael (1615) | Lost 1-2 | -151451 |
| 4sealed | 215 | Darden, Christopher B. (1482) | Lost 0-2 | -181433 |
| 5sealed | 211 | Bell, Michael (1446) | Won 2-0 | +191452 |
| 6sealed | 164 | White, Greg (1482) | Lost 0-2 | -181434 |
| top | average opponent: 1509record: 1-4 | new rating: 1434 | ||
| Grand Prix Boston 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Carroll, Mark (1522) | Lost 1-2 | -181482 |
| 2sealed | 149 | Cunningham, Robert (1482) | Won 2-1 | +181500 |
| 3sealed | 160 | Sullivan, Adrian (1565) | Lost 0-2 | -161484 |
| top | average opponent: 1523record: 1-2 | new rating: 1484 | ||