Hartshorn, Robin
Current rating: 1582
Record: 18-14-1
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1610 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 452 | Lapides, Alexandra (1500) | Won 2-0 | +161626 |
| 2legacy | 146 | Chilbert, Colin (1745) | Lost 1-2 | -161610 |
| 3legacy | 467 | Smith, Brendan (1504) | Lost 1-2 | -201590 |
| 4legacy | 528 | Mensinger, Trevor (1437) | Won 2-0 | +151605 |
| 5legacy | 3009 | Ballinger, Bradley (1458) | Lost 0-2 | -211584 |
| 6legacy | 493 | Sawyer, Ronald (1511) | Won 2-1 | +171601 |
| 7legacy | 429 | Stepka, Benjamin (1524) | Lost 1-2 | -191582 |
| top | average opponent: 1526record: 3-4 | new rating: 1582 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1620 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 1507 | Horng, Kevin (1483) | Won 2-1 | +151635 |
| 3sealed | 1717 | Carrier, Jared (1548) | Won 2-0 | +171652 |
| 4sealed | 1368 | Margoliash, Jonathan (1554) | Won 2-1 | +161668 |
| 5sealed | 1172 | Goodson, Tony (1594) | Lost 1-2 | -191649 |
| 6sealed | 1138 | Solari, Rafael (1572) | Lost 0-2 | -201629 |
| 7sealed | 880 | Hudak, Casey (1537) | Lost 1-2 | -191610 |
| top | average opponent: 1548record: 3-3 | new rating: 1610 | ||
| Grand Prix Portland 2013 (modern) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 282 | Banaszek, Rory (1500) | Won 2-0 | +181519 |
| 2modern | 74 | Soo, Gabriel (1501) | Won 2-1 | +171536 |
| 3modern | 48 | Harold, Greg (1535) | Won 2-1 | +181554 |
| 4modern | 140 | Chambers, Adam (1777) | Won 2-0 | +221576 |
| 5modern | 37 | Gunderson, Isaiah (1581) | Won 2-0 | +181594 |
| 6modern | 7 | Hong, Chris (1562) | Lost 1-2 | -181576 |
| 7modern | 49 | Tan, Richmond (1826) | Won 2-0 | +221598 |
| 8modern | 15 | Wiegersma, Jelger (1941) | Won 2-1 | +241622 |
| 9modern | 112 | Smith, Brian W (1540) | Lost 1-2 | -191603 |
| 10modern | 65 | Stern, Jon (2037) | Lost 0-2 | -111592 |
| 11modern | 49 | Westling, Tomas (1793) | Lost 1-2 | -141578 |
| 12modern | 64 | Molina, Cody (1586) | Won 2-1 | +181596 |
| 13modern | 56 | Levy, Olivier (1748) | Lost 0-2 | -151581 |
| 14modern | 54 | Passow, Christopher (1707) | Won 2-0 | +201601 |
| 15modern | 53 | Dunks, Jess (1648) | Won 2-1 | +191620 |
| top | average opponent: 1685record: 10-5 | new rating: 1620 | ||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 158 | Thorson, Phil (1537) | Lost 1-2 | -171483 |
| 2standard | 312 | Luton, Sam (1497) | Won 2-1 | +181501 |
| 3standard | 319 | Stanton, Carl (1500) | Won 2-0 | +181519 |
| 4standard | 187 | Crawford, Tyler J (1502) | Draw 1-1 | 01519 |
| 5standard | 254 | Barnes, Miles E (1517) | Lost 0-2 | -181501 |
| top | average opponent: 1511record: 2-2-1 | new rating: 1501 | ||