Niebuhr, John
Current rating: 1467
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 443 | Pelham, Nicholas (1500) | Lost 1-2 | -181443 |
| 2modern | 460 | Bone, June (1481) | Won 2-1 | +191462 |
| 3modern | 392 | Slater, Michael (1450) | Won 2-0 | +181480 |
| 4modern | 247 | Brown, Jesse (1619) | Won 2-1 | +201500 |
| 5modern | 235 | Puno, Cyril (1589) | Lost 1-2 | -161484 |
| 6modern | 297 | Kominowski, Maxx (1528) | Lost 0-2 | -171467 |
| top | average opponent: 1528record: 3-3 | new rating: 1467 | ||
| Grand Prix Phoenix 2018 (modern) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 86 | Acosta, Andres (1500) | Won 2-0 | +191474 |
| 2modern | 131 | Elliott, Casey (1426) | Won 2-0 | +171491 |
| 3modern | 76 | Richardson, Andrew (1429) | Lost 0-2 | -191472 |
| 4modern | 321 | Espinoza, Daniel (1516) | Lost 0-2 | -171455 |
| 5modern | 340 | [anonymous] | Won 2-0 | +191474 |
| 6modern | 275 | Cuillier, Paul (1743) | Lost 1-2 | -131461 |
| top | average opponent: 1520record: 3-3 | new rating: 1461 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 305 | Manabat, Philip George (1640) | Won 2-0 | +211521 |
| 2sealed | 47 | Walters, Eric (1560) | Lost 0-2 | -181503 |
| 3sealed | 354 | Hurtado, Patrick (1716) | Lost 1-2 | -141489 |
| 4sealed | 425 | Davila, David (1611) | Lost 0-2 | -161473 |
| 5sealed | 455 | Mozingo, Michael (1468) | Lost 0-2 | -181455 |
| top | average opponent: 1599record: 1-4 | new rating: 1455 | ||