Ambrose, Joshua
Current rating: 1642
Record: 20-13
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1647 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 711 | Barnhart, Andrew (1603) | Lost 1-2 | -191628 |
| 2modern | 614 | Bryant, Cristopher (1429) | Won 2-1 | +141642 |
| top | average opponent: 1516record: 1-1 | new rating: 1642 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 324 | Cortez, Michael (1626) | Lost 0-2 | -161526 |
| 4modern | 552 | Perez, Ryan (1601) | Won 2-0 | +191545 |
| 5modern | 652 | Hollars, Shane (1545) | Won 2-0 | +181563 |
| 6modern | 436 | Monks, Josh (1460) | Won 2-1 | +161579 |
| 7modern | 79 | Merola Moros, Pascual (1547) | Lost 0-2 | -181561 |
| 8modern | 443 | Cooper, Tyler (1647) | Won 2-1 | +191580 |
| 9modern | 291 | Larsson, Chris (1662) | Won 2-1 | +201600 |
| 10modern | 109 | Koenig, Jake (1734) | Lost 0-2 | -161584 |
| 11modern | 187 | Baker, Pierce (1580) | Won 2-1 | +181602 |
| 12modern | 198 | Matsuura, Takumi (1808) | Won 2-0 | +221624 |
| 13modern | 149 | Royer, Danny (1749) | Lost 1-2 | -161608 |
| 14modern | 143 | Tamada, Ryoichi (1902) | Won 2-1 | +231631 |
| 15modern | 116 | Lepper, Lantz (1506) | Won 2-0 | +161647 |
| top | average opponent: 1644record: 9-4 | new rating: 1647 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 263 | Pacione, Danny (1500) | Lost 1-2 | -181500 |
| 2modern | 584 | Musick, Joel (1608) | Won 2-1 | +201520 |
| 3modern | 633 | Adrian, Nathan (1597) | Won 2-0 | +201540 |
| 4modern | 541 | Daughhetee, Jacob (1541) | Lost 1-2 | -181522 |
| 5modern | 461 | Wall, Keith (1447) | Won 2-1 | +161538 |
| 6modern | 397 | Culhane, Stephen (1484) | Won 2-0 | +171555 |
| 7modern | 387 | Monk, Derek (1728) | Lost 1-2 | -151540 |
| 8modern | 400 | Klomparens, Jadine (1723) | Won 2-0 | +221562 |
| 9modern | 213 | Copenhaver, Dalton (1478) | Lost 0-2 | -201542 |
| top | average opponent: 1567record: 5-4 | new rating: 1542 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 551 | Sakamaki, Tatsuya (1500) | Lost 0-2 | -181482 |
| 2modern | 563 | Pauley, Eric (1481) | Lost 0-2 | -181464 |
| 3modern | 1025 | Bardeen, Owen (1465) | Won 2-0 | +181482 |
| 4modern | 929 | Farnsworth, Paul (1554) | Won 2-1 | +191501 |
| 5modern | 757 | Barnum, Christopher (1488) | Won 2-0 | +181519 |
| 6modern | 475 | [anonymous] | Won 2-0 | +191538 |
| 7modern | 255 | Zelick, Aaron (1500) | Lost 1-2 | -191519 |
| 8modern | 371 | Shen, Victor (1517) | Won 2-1 | +181537 |
| 9modern | 265 | Allison, Chad (1511) | Lost 0-2 | -191518 |
| top | average opponent: 1508record: 5-4 | new rating: 1518 | ||