Cobb, William
Current rating: 1389
Record: 13-24-1
| Grand Prix New Jersey 2020 (THB limited) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 274 | Hendricks, Thomas (1584) | Lost 1-2 | -161420 |
| 3sealed | 496 | Barsnica, Jeffrey (1591) | Lost 0-2 | -151405 |
| 4sealed | 617 | Thumhart, Justin (1482) | Lost 0-2 | -161389 |
| top | average opponent: 1552record: 0-3 | new rating: 1389 | ||
| Grand Prix Richmond 2019 (ELD standard) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 11 | De Rosa, Antonino (1972) | Lost 0-2 | -81408 |
| 3standard | 200 | Bellafiore, Joey (1502) | Won 2-0 | +191427 |
| 4standard | 203 | Taylor, Benjamin (1509) | Draw 1-1 | +21429 |
| 5standard | 152 | Pham, Hoang Ha (1524) | Lost 1-2 | -171412 |
| 6standard | 186 | Goanos, Steven (1448) | Won 2-0 | +191431 |
| 7standard | 140 | Stevens, Chris (1491) | Won 2-0 | +191450 |
| 8standard | 96 | Wolbers, Andrew (1636) | Lost 1-2 | -141436 |
| top | average opponent: 1583record: 3-3-1 | new rating: 1436 | ||
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1373 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 96 | Massey, Christopher (1279) | Won 0-0 | +161389 |
| 3sealed | 7 | Phillips, Cedric (1817) | Lost 1-2 | -111378 |
| 4sealed | 206 | Waugh, Marcus (1523) | Won 2-0 | +211399 |
| 5sealed | 166 | McDougal, Shaun (1529) | Lost 0-2 | -161383 |
| 6sealed | 192 | Benderly-Kraft, Sasha (1524) | Won 2-1 | +211404 |
| 7sealed | 149 | Schnayer, Tobias (1985) | Lost 0-2 | -91395 |
| 8sealed | 185 | Kaska, Chris (1561) | Won 2-1 | +211416 |
| top | average opponent: 1603record: 4-3 | new rating: 1416 | ||
| Grand Prix New Jersey 2018 (GRN standard) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 58 | Laufer, Ben (1689) | Lost 1-2 | -141413 |
| 3standard | 476 | Van Brussel, Joe (1651) | Lost 1-2 | -141399 |
| 4standard | 529 | Lam, Liquan (1625) | Lost 1-2 | -131386 |
| 5standard | 503 | Lesher, Jeremy (1511) | Won 2-1 | +201406 |
| 6standard | 389 | Dooling, Zachary (1506) | Lost 1-2 | -161390 |
| 7standard | 397 | Katz, Aden (1446) | Lost 0-2 | -171373 |
| top | average opponent: 1571record: 1-5 | new rating: 1373 | ||
| Grand Prix Richmond 2018 (std) (M19 standard) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 139 | Grodzinski, Tyler (1790) | Lost 1-2 | -121479 |
| 3standard | 279 | Casey, Ronan (1499) | Lost 1-2 | -181461 |
| 4standard | 321 | Thorpe, Luke (1515) | Lost 1-2 | -171444 |
| 5standard | 315 | Nickle, Kayla (1472) | Lost 1-2 | -171427 |
| top | average opponent: 1569record: 0-4 | new rating: 1427 | ||
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 134 | Walker, Bryan (1414) | Lost 0-2 | -191443 |
| 3standard | 259 | Triplett, Leslie (1420) | Won 2-0 | +181461 |
| 4standard | 150 | Cox, Patrick (1689) | Won 2-1 | +221483 |
| 5standard | 147 | Gellis, Dylan (1772) | Lost 0-2 | -131470 |
| 6standard | 258 | Li, Lucas Muxi (1616) | Lost 0-2 | -151455 |
| 7standard | 258 | Alfaro, Juan (1504) | Won 2-0 | +191474 |
| 8standard | 188 | Gray, Darren (1455) | Won 2-0 | +171491 |
| top | average opponent: 1553record: 4-3 | new rating: 1491 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 239 | Bachmann, Thomas (1500) | Won 2-0 | +181518 |
| 2sealed | 23 | Calandro, Tiffany (1367) | Lost 0-2 | -211497 |
| 3sealed | 474 | Mahadeo, Dinesh (1537) | Lost 0-2 | -171480 |
| 4sealed | 653 | Lanza, Giovanni (1496) | Lost 0-2 | -181462 |
| top | average opponent: 1475record: 1-3 | new rating: 1462 | ||