Anderegg, William
Current rating: 1560
Record: 21-19-3
| Regional Championships San Diego 2023 (ONE standard) | starting rating: 1619 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 363 | Blauss, Richard (1501) | Won 2-0 | +161635 |
| 2standard | 90 | Hayes, Ryan (1586) | Lost 0-2 | -191616 |
| 3standard | 195 | Carlson, Nick (1687) | Lost 0-2 | -171599 |
| 4standard | 340 | Benck, Kora (1556) | Lost 0-2 | -191580 |
| 5standard | 339 | Lum, Aiden (1465) | Lost 0-2 | -201560 |
| top | average opponent: 1559record: 1-4 | new rating: 1560 | ||
| Grand Prix Denver 2019 (M20 standard) | starting rating: 1606 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 138 | Selby, Stephen (1500) | Lost 1-2 | -201586 |
| 2standard | 193 | Robinson, Ryan (1465) | Won 2-0 | +161602 |
| 3standard | 161 | Brunelle, Ryan (1425) | Won 2-1 | +141616 |
| 4standard | 156 | Riveros, Julian (1661) | Won 2-0 | +191635 |
| 5standard | 64 | Zabawa, Steve (1509) | Won 2-1 | +161651 |
| 6standard | 60 | Blackwood, Andrew (1817) | Lost 0-2 | -151636 |
| 7standard | 87 | Weber, Brian (1688) | Lost 1-2 | -171619 |
| top | average opponent: 1581record: 4-3 | new rating: 1619 | ||
| Grand Prix Denver 2017 (HOU standard) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 285 | St. Denis, Joshua (1500) | Won 2-1 | +181542 |
| 2standard | 105 | Simonson, Erik (1504) | Won 2-0 | +171559 |
| 3standard | 37 | Jorn, Christian (1534) | Won 2-0 | +181577 |
| 4standard | 53 | Bell, Rebecca (1607) | Lost 0-2 | -181559 |
| 5standard | 146 | Lounsbury, Christopher (1592) | Won 2-1 | +191578 |
| 6standard | 59 | Smith, Evan (1725) | Won 2-1 | +211599 |
| 7standard | 66 | Job, Jonathan (1979) | Lost 1-2 | -121587 |
| 8standard | 116 | Thompson, Joe (1533) | Won 2-1 | +171604 |
| 9standard | 78 | Canales, David (1550) | Won 2-1 | +171621 |
| 10standard | 49 | Salem, Jonathan (1870) | Lost 1-2 | -131608 |
| 11standard | 78 | Hurtado, Patrick (1694) | Lost 0-2 | -171591 |
| 12standard | 111 | Peters, Stephen (1831) | Won 2-1 | +221613 |
| 13standard | 63 | Scheid, Daniel (1766) | Lost 0-2 | -151598 |
| 14standard | 100 | Ioanis, Dillon (1899) | Won 2-1 | +241622 |
| 15standard | 88 | Burch, Jacob (1735) | Lost 1-2 | -161606 |
| top | average opponent: 1688record: 9-6 | new rating: 1606 | ||
| Grand Prix Lincoln 2012 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 149 | Hinkle, Thomas (1500) | Won 2-0 | +181537 |
| 2modern | 104 | Jensen, Nicholas (1500) | Lost 1-2 | -191518 |
| 3modern | 179 | Wilt, Carl (1430) | Lost 1-2 | -191499 |
| 4modern | 318 | Smith, Barry (1467) | Won 2-0 | +171516 |
| 5modern | 207 | Plocher, Justin (1482) | Draw 1-1 | -11515 |
| 6modern | 226 | Bearl, Ken (1681) | Won 2-1 | +211536 |
| 7modern | 168 | Allen, Connor (1540) | Lost 0-2 | -181518 |
| 8modern | 160 | Pierson, Tim A (1497) | Won 2-0 | +181536 |
| 9modern | 122 | Gleicher, David (1892) | Lost 1-2 | -121524 |
| top | average opponent: 1554record: 4-4-1 | new rating: 1524 | ||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 139 | Kailing, Michael (1500) | Won 2-0 | +181518 |
| 2extended | 55 | Boutin, Jon (1572) | Draw 1-1 | +11519 |
| 3extended | 174 | Williams, Toby (1518) | Draw 0-0 | 01519 |
| 4extended | 301 | Cimaszewski, Joseph (1501) | Lost 1-2 | -181501 |
| 5extended | 352 | Remigio, Inigo (1500) | Won 2-0 | +181519 |
| 6extended | 275 | Hartzler, Adam B (1501) | Won 2-0 | +171536 |
| 7extended | 197 | Goh, Darwin (1585) | Lost 1-2 | -171519 |
| top | average opponent: 1525record: 3-2-2 | new rating: 1519 | ||