Joosten, Geoffrey
Current rating: 1596
Record: 11-7
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 67 | Luebbert, Ryan (1486) | Won 2-0 | +191464 |
| 2modern | 155 | Lange, Jeremy (1516) | Lost 0-2 | -171447 |
| 3modern | 996 | Nicosia, Conrad (1500) | Won 2-1 | +191466 |
| 4modern | 853 | Stefek, Ronny (1470) | Won 2-0 | +181484 |
| 5modern | 350 | Arias, Jaycob (1540) | Won 2-0 | +191503 |
| 6modern | 185 | Martinez, Mario E (1756) | Lost 1-2 | -131490 |
| 7modern | 665 | Klump, Erik (1762) | Won 2-1 | +221512 |
| 8modern | 333 | Ongaro, Michael (1613) | Won 2-0 | +201532 |
| 9modern | 169 | Blodgett, Dennis (1577) | Won 2-0 | +191551 |
| 10modern | 166 | Sendaydiego, Curt (1602) | Won 2-1 | +191570 |
| 11modern | 75 | Moazen-Sayad, Pedram (1653) | Won 2-1 | +191589 |
| 12modern | 25 | Pin, Erik (1507) | Lost 0-2 | -191570 |
| 13modern | 105 | Edelkamp, Fred (1858) | Won 2-1 | +231593 |
| 14modern | 89 | Des Marais, Nick (1702) | Lost 0-2 | -161577 |
| 15modern | 151 | Yee, Truman (1642) | Won 2-0 | +191596 |
| average opponent: 1612record: 11-4 | new rating: 1596 | |||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 416 | Alcala, Sergio (1402) | Lost 1-2 | -201480 |
| 2modern | 684 | Morales, Andrew (1547) | Lost 1-2 | -171463 |
| 3modern | 958 | Carpenter, Clint (1458) | Lost 0-2 | -181445 |
| average opponent: 1469record: 0-3 | new rating: 1445 | |||