Landenberger, Collin
Current rating: 1448
| Regional Championships Atlanta 2023 (pioneer) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 480 | Fink, Justin (1470) | Lost 0-2 | -181432 |
| 2pioneer | 387 | Buley, Rickie (1428) | Lost 1-2 | -181414 |
| 3pioneer | 639 | Messeder, Isaac (1473) | Lost 1-2 | -171397 |
| 4pioneer | 624 | Liu, Richard (1624) | Lost 1-2 | -141383 |
| 5pioneer | 585 | Hill, Robert (1425) | Won 2-0 | +191402 |
| 6pioneer | 507 | Lomangino, Fred (1443) | Won 2-1 | +191421 |
| 7pioneer | 406 | Kovac, Chase (1703) | Won 2-0 | +231444 |
| 8pioneer | 313 | Pritchett, Shane (1489) | Won 2-0 | +191463 |
| 9pioneer | 247 | Fowler, Colten (1670) | Lost 0-2 | -151448 |
| top | average opponent: 1525record: 4-5 | new rating: 1448 | ||
| Grand Prix Denver 2017 (HOU standard) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 38 | Combs, Mia (1500) | Won 2-0 | +191479 |
| 2standard | 54 | Herrera, Christopher (1502) | Lost 1-2 | -171462 |
| 3standard | 293 | Yunker, Mathew (1500) | Lost 0-2 | -181444 |
| 4standard | 493 | Wair, Ulric (1482) | Won 2-0 | +191463 |
| 5standard | 292 | Gass, Jeremy (1547) | Won 2-1 | +191482 |
| 6standard | 263 | Nemeth, Mark (1658) | Lost 0-2 | -141468 |
| 7standard | 381 | Watson, James (1484) | Lost 0-2 | -181450 |
| top | average opponent: 1525record: 3-4 | new rating: 1450 | ||
| Grand Prix Denver 2015 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 277 | Buono, Robert (1431) | Won 2-1 | +171517 |
| 2standard | 164 | Frank, Ian (1518) | Lost 0-2 | -181499 |
| 3standard | 381 | David, Dakota (1499) | Lost 1-2 | -181481 |
| 4standard | 485 | Martinez, David J (1480) | Won 2-1 | +181499 |
| 5standard | 524 | Chapple, Josh (1412) | Lost 1-2 | -201479 |
| 6standard | 449 | Vogel, Peter (1431) | Won 2-0 | +171496 |
| 7standard | 307 | Evans, Dylan (1498) | Lost 0-2 | -181478 |
| 8standard | 305 | Dalgo, Dakota (1482) | Lost 0-2 | -181460 |
| top | average opponent: 1469record: 3-5 | new rating: 1460 | ||