Tolmachoff, Dean
Current rating: 1478
Record: 15-18-2
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 620 | Matthews, Zachary (1500) | Won 2-0 | +181490 |
| 2modern | 386 | Lance, John (1469) | Won 2-1 | +181508 |
| 3modern | 9 | Griffith, Cole (1535) | Lost 0-2 | -181490 |
| 4modern | 640 | Kilby, Billy (1482) | Won 2-0 | +181508 |
| 5modern | 437 | Turensky, Benjamin (1694) | Lost 1-2 | -141494 |
| 6modern | 606 | Nett, Patrick (1608) | Lost 0-2 | -161478 |
| top | average opponent: 1548record: 3-3 | new rating: 1478 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 318 | Sumiguin, Vincent (1500) | Won 2-0 | +181507 |
| 2modern | 109 | Hampton, Patrick (1541) | Draw 1-1 | +11508 |
| 3modern | 492 | Pang, Ray (1517) | Lost 1-2 | -181490 |
| 4modern | 722 | Shonk, Chad (1499) | Lost 1-2 | -181472 |
| top | average opponent: 1514record: 1-2-1 | new rating: 1472 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 567 | Dorf, Alan (1500) | Lost 1-2 | -171470 |
| 2standard | 716 | Castaneda, Jan Karlo (1482) | Lost 1-2 | -181452 |
| 3standard | 813 | DeOliveira, Tyler (1467) | Won 2-0 | +181470 |
| 4standard | 766 | Luna, Richard (1486) | Draw 1-1 | 01470 |
| 5standard | 693 | Gonzales, Zack (1481) | Won 2-0 | +191489 |
| top | average opponent: 1483record: 2-2-1 | new rating: 1489 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 200 | Martinez, Michael (1452) | Lost 0-2 | -191523 |
| 2sealed | 288 | Herretes, Jared (1522) | Lost 0-2 | -181505 |
| 3sealed | 320 | Long, Hogan (1549) | Lost 1-2 | -181487 |
| top | average opponent: 1508record: 0-3 | new rating: 1487 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1194 | Loterbauer, Jakob (1500) | Won 2-1 | +171564 |
| 2sealed | 1114 | Snydar, Zachary (1519) | Lost 0-2 | -181546 |
| 3sealed | 1244 | Slomann, Scott (1527) | Lost 0-2 | -191527 |
| 4sealed | 1273 | Bartholdi, Maria (1482) | Won 2-0 | +171544 |
| 5sealed | 1149 | Rider, Robert (1469) | Won 2-0 | +171561 |
| 6sealed | 1126 | Bao, Ning (1523) | Lost 0-2 | -191542 |
| top | average opponent: 1503record: 3-3 | new rating: 1542 | ||
| Grand Prix San Diego 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4modern | 40 | De Rouen, Beau (1520) | Lost 0-2 | -181482 |
| 5modern | 40 | Sittner, Alex (1715) | Lost 0-2 | -131469 |
| 6modern | 40 | Waxer, Nathan (1701) | Won 2-0 | +221491 |
| 7modern | 40 | Ogami, Kenneth (1520) | Won 2-0 | +181509 |
| 8modern | 40 | Straka, Ian (1527) | Won 2-1 | +191528 |
| 9modern | 40 | Cummings, James (1543) | Won 2-1 | +181546 |
| 11modern | 12 | Nabi, Basil (1864) | Won 2-0 | +231569 |
| 12modern | 12 | Danylyshen, Nicholas (1649) | Lost 0-2 | -161553 |
| 13modern | 12 | Raines, Joseph (1637) | Won 2-1 | +191572 |
| 14modern | 12 | Utter-Leyton, Josh (2025) | Lost 0-2 | -101562 |
| 15modern | 12 | Froehlig, Timothy (1732) | Lost 0-2 | -151547 |
| top | average opponent: 1676record: 6-5 | new rating: 1547 | ||