Wittenberg, Clark
Current rating: 1487
Record: 13-15
| Regional Championships San Diego 2023 (ONE standard) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 453 | Echavarria, Carlos (1505) | Lost 0-2 | -181484 |
| 2standard | 394 | Okada, Satomi (1484) | Won 2-0 | +181502 |
| 3standard | 267 | Bostic, Gabriel (1508) | Lost 0-2 | -181484 |
| 4standard | 263 | Durma, Cezary (1483) | Won 2-0 | +181502 |
| 5standard | 300 | Wager, James (1608) | Lost 0-2 | -161486 |
| 6standard | 303 | Carrette, Jeremy (1466) | Won 2-1 | +181504 |
| 7standard | 263 | Lohner, Zachary (1556) | Lost 0-2 | -171487 |
| top | average opponent: 1516record: 3-4 | new rating: 1487 | ||
| Grand Prix Portland 2018 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 507 | Goff, Robert (1423) | Won 2-0 | +171501 |
| 2modern | 306 | Bean, Chris (1518) | Won 2-0 | +181519 |
| 3modern | 96 | Turchansky, Zak (1691) | Lost 0-2 | -151504 |
| 4modern | 448 | DiFatta, Josh (1579) | Lost 0-2 | -171487 |
| 5modern | 552 | Rubin, Sam (1532) | Won 2-1 | +191506 |
| 6modern | 313 | Stene, Ryan (1520) | Won 2-0 | +181524 |
| 7modern | 349 | Leon, Markes (1513) | Won 2-1 | +181542 |
| 8modern | 111 | Yandell, Josh (1557) | Won 2-0 | +181560 |
| 9modern | 101 | Smith, Robert RC (1943) | Lost 0-2 | -111549 |
| 10modern | 158 | Lin, Jianfeng (1690) | Lost 1-2 | -151534 |
| 11modern | 151 | Engelhard, Eric (1696) | Won 2-1 | +211555 |
| 12modern | 116 | Shinkle, Christopher (1604) | Lost 0-2 | -181537 |
| 13modern | 131 | Asa, William (1488) | Lost 0-2 | -181519 |
| 14modern | 122 | Balistreri, Vincenzo (1612) | Lost 1-2 | -171502 |
| top | average opponent: 1598record: 7-7 | new rating: 1502 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 338 | Chilbert, Colin (1731) | Lost 1-2 | -141486 |
| 2legacy | 459 | Black, Morian (1542) | Won 2-0 | +191505 |
| 3legacy | 408 | Warner, Edwin (1488) | Lost 1-2 | -181487 |
| 4legacy | 656 | Stoneman, Benjamin (1448) | Won 2-1 | +171504 |
| 5legacy | 446 | Porchas, Justin (1423) | Won 2-0 | +171521 |
| 6legacy | 271 | De Vera, Brandon (1524) | Lost 1-2 | -181503 |
| 7legacy | 441 | Shroyer, Caleb (1441) | Lost 1-2 | -191484 |
| top | average opponent: 1514record: 3-4 | new rating: 1484 | ||