Tosto, Dave
Current rating: 1519
Record: 21-20-1
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 553 | Tukeman, Sammy (1682) | Draw 1-1 | +31516 |
| 2modern | 642 | Jamrose, Todd (1416) | Won 2-0 | +161532 |
| 3modern | 776 | Johnson, Aaron (1483) | Lost 1-2 | -191513 |
| 4modern | 1032 | Weigman, Gary (1577) | Won 2-1 | +191532 |
| 5modern | 712 | Fagerland, Mirjam (1494) | Won 2-0 | +181550 |
| 6modern | 473 | Bonde, Michael (1841) | Lost 0-2 | -131537 |
| 7modern | 708 | Walker, Justin (1516) | Lost 0-2 | -181519 |
| top | average opponent: 1572record: 3-3-1 | new rating: 1519 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 309 | Thomas, Travis (1600) | Won 2-1 | +201541 |
| 2sealed | 65 | Fazio, Michael (1288) | Lost 0-2 | -231518 |
| 3sealed | 689 | Elson, Jordan (1479) | Won 2-0 | +171535 |
| 4sealed | 369 | Sackett, Eric (1361) | Lost 0-2 | -211514 |
| 5sealed | 762 | Petree, Thomas (1471) | Won 2-1 | +171531 |
| 6sealed | 640 | Antonelli, Matthew (1509) | Lost 0-2 | -181513 |
| top | average opponent: 1451record: 3-3 | new rating: 1513 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 423 | Vegh, Michael (1514) | Lost 0-2 | -181543 |
| 2legacy | 504 | McCreedy, Bradley (1435) | Won 2-1 | +161559 |
| 3legacy | 946 | Hamernick Jr, Burt (1573) | Lost 0-2 | -181541 |
| 4legacy | 1010 | Van Wyk, Cornelius (1482) | Won 2-0 | +171558 |
| 5legacy | 819 | Vincik, Adam (1606) | Lost 1-2 | -171541 |
| 6legacy | 978 | Jeffress, Christopher (1452) | Lost 0-2 | -201521 |
| top | average opponent: 1510record: 2-4 | new rating: 1521 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 141 | Stutsman, Justin (1510) | Won 2-1 | +171583 |
| 3modern | 187 | Huang, Bob (1686) | Lost 0-2 | -161567 |
| 4modern | 336 | Jacobus, Michael (1517) | Lost 0-2 | -191548 |
| 5modern | 463 | Kiemes, Johannes (1501) | Won 2-1 | +171565 |
| 6modern | 315 | Koch, Kevin (1499) | Lost 1-2 | -191546 |
| 7modern | 340 | Wilson, Steve (1516) | Lost 0-2 | -191527 |
| 8modern | 289 | Husted, Joshua (1551) | Won 2-0 | +191546 |
| 9modern | 233 | Jackson, Daniel (1422) | Won 2-1 | +151561 |
| top | average opponent: 1525record: 4-4 | new rating: 1561 | ||
| Grand Prix Louisville 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 341 | Taylor, Bradford (1500) | Lost 1-2 | -181482 |
| 2standard | 437 | Sivnksty, David (1482) | Won 2-1 | +181500 |
| 3standard | 389 | Hallowell, Kyle D (1493) | Won 2-0 | +181518 |
| 4standard | 383 | Conley, Shawn (1519) | Won 2-0 | +181536 |
| 5standard | 204 | Bible, Jabin (1467) | Won 2-1 | +171553 |
| 6standard | 162 | Passarelli, Hayden (1552) | Won 2-1 | +181571 |
| 7standard | 152 | West, Zachary (1506) | Won 2-1 | +161587 |
| 8standard | 143 | Boswell, Andrew (1750) | Won 2-1 | +211608 |
| 9standard | 118 | Stern, Jon (1978) | Lost 0-2 | -111597 |
| 10standard | 48 | Nelson, Ryan (1515) | Won 2-1 | +161613 |
| 11standard | 18 | Garnier, Spencer (1660) | Won 2-1 | +191632 |
| 12standard | 18 | Blair, Mike (1632) | Lost 1-2 | -181614 |
| 13standard | 29 | Neal, Stephen (1790) | Lost 1-2 | -151599 |
| 14standard | 35 | Schauf, Scott (1723) | Lost 0-2 | -151584 |
| 15standard | 51 | Flickinger, Eric (1599) | Lost 1-2 | -181566 |
| top | average opponent: 1611record: 9-6 | new rating: 1566 | ||