Martinelli, Jonathan
Current rating: 1502
Record: 8-8
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 786 | Thomas, Ian (1523) | Won 2-0 | +181519 |
| 2sealed | 477 | O'Donnell, Drew (1593) | Won 2-0 | +201539 |
| 3sealed | 249 | Bieza, Scott (1526) | Lost 1-2 | -181521 |
| 4sealed | 697 | Sigler, Michael (1475) | Lost 0-2 | -191502 |
| top | average opponent: 1529record: 2-2 | new rating: 1502 | ||
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 480 | Falcis, Carlo (1724) | Won 2-1 | +211557 |
| 2standard | 187 | Schlom, Christoph (1506) | Lost 1-2 | -191538 |
| 3standard | 473 | Mendoza, James (1500) | Lost 1-2 | -181520 |
| 4standard | 573 | Entrialgo, Peter (1485) | Lost 1-2 | -191501 |
| top | average opponent: 1554record: 1-3 | new rating: 1501 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 861 | Ling, Bill (1500) | Won 2-0 | +181518 |
| 2standard | 831 | Xiang, Jun (1518) | Won 2-1 | +181536 |
| 3standard | 627 | Fleury, Aaron (1618) | Lost 0-2 | -171519 |
| 4standard | 866 | Elfering, Brian (1522) | Won 2-0 | +191538 |
| 5standard | 767 | Sussino, Tim (1444) | Lost 1-2 | -201518 |
| 6standard | 831 | Strange, Jason (1518) | Won 2-0 | +181536 |
| 7standard | 735 | Holdridge, Shane (1538) | Won 1-0 | +181554 |
| 8standard | 689 | Deveines, Brandon (1555) | Lost 1-2 | -181536 |
| top | average opponent: 1527record: 5-3 | new rating: 1536 | ||