Harrison, Jeffrey
Current rating: 1498
Record: 31-33-1
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 31 | Williams, Chance (1501) | Won 2-0 | +181535 |
| 2sealed | 255 | Hallock, Jason (1463) | Lost 1-2 | -191516 |
| 3sealed | 395 | Truong, Andy (1551) | Lost 1-2 | -181498 |
| 4sealed | 438 | Benke, Joseph (1448) | Won 2-0 | +171515 |
| 5sealed | 443 | Chatters, Jake (1556) | Lost 0-2 | -171498 |
| top | average opponent: 1504record: 2-3 | new rating: 1498 | ||
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 8 | Nematollahi, Ryan (1468) | Won 2-1 | +181499 |
| 2modern | 297 | Reddick, Roman (1471) | Won 2-1 | +171516 |
| 3modern | 248 | Shah-Jones, Hugo (1436) | Won 2-1 | +171533 |
| 4modern | 57 | Gillette, Steven (1556) | Won 2-1 | +181551 |
| 5modern | 51 | Neal, Chris (1868) | Lost 1-2 | -121539 |
| 6modern | 169 | Besterman, Daniel (1666) | Lost 0-2 | -161523 |
| 7modern | 203 | Bruner, Christopher (1625) | Won 2-1 | +201543 |
| 8modern | 203 | Lin, Le (1758) | Won 2-0 | +221565 |
| 9modern | 146 | Martell, Tom (1828) | Lost 1-2 | -141551 |
| 10modern | 134 | Lo, Josh Leander (1611) | Lost 0-2 | -161535 |
| 11modern | 134 | Yeh, Jon (1535) | Lost 0-2 | -181517 |
| 12modern | 136 | Jara Godoy, Nehuen (1673) | Won 2-0 | +201537 |
| 13modern | 117 | Martinez, Phillip (1416) | Lost 0-2 | -201517 |
| top | average opponent: 1608record: 7-6 | new rating: 1517 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 274 | Millbank, Nathen (1473) | Lost 1-2 | -191499 |
| 2modern | 967 | Vickers, Dylan (1483) | Lost 1-2 | -181481 |
| top | average opponent: 1478record: 0-2 | new rating: 1481 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 845 | Gaines, Tyler Jo (1537) | Lost 1-2 | -181483 |
| 2modern | 923 | Young, Christopher 685 (1482) | Won 2-1 | +181501 |
| 3modern | 919 | DeBruin, Jon (1490) | Won 2-0 | +181519 |
| 4modern | 588 | Colon, Michael (1407) | Lost 1-2 | -201499 |
| 5modern | 900 | Jacox, Sean (1543) | Won 2-0 | +191518 |
| 6modern | 912 | Mitchell, Miles (1518) | Won 2-0 | +181536 |
| 7modern | 558 | Oaks, Christian (1532) | Won 2-0 | +181554 |
| 8modern | 309 | Dillon, Wayne (1575) | Lost 0-2 | -181536 |
| 9modern | 495 | Allison, Joshua (1521) | Lost 1-2 | -181518 |
| top | average opponent: 1512record: 5-4 | new rating: 1518 | ||
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 161 | Huynh, Anthony (1876) | Lost 0-2 | -111457 |
| 4standard | 243 | Van Berg, Aaron (1466) | Lost 0-2 | -181439 |
| 5standard | 522 | Hart, Jonathon (1513) | Lost 0-0 | -171422 |
| 6standard | 497 | Nelson, John X (1446) | Won 2-0 | +191441 |
| 7standard | 465 | Miller, Adam (1438) | Won 2-0 | +181459 |
| 8standard | 389 | Fireman Schiavoni, Max (1487) | Won 2-0 | +181477 |
| 9standard | 285 | Porter, Michael (1557) | Won 2-1 | +201497 |
| 10standard | 195 | Gray, Jeremy (1536) | Lost 0-2 | -181479 |
| 11standard | 171 | Campbell, Chantelle (1543) | Won 2-0 | +201499 |
| 12standard | 159 | Stremming, Kyl (1457) | Lost 1-2 | -191480 |
| 13standard | 153 | Canales, David (1526) | Won 2-1 | +191499 |
| 14standard | 115 | Tafoya, Michael (1566) | Won 2-0 | +191518 |
| 15standard | 112 | Recanzone, Ryan (1569) | Lost 0-2 | -171501 |
| top | average opponent: 1537record: 7-6 | new rating: 1501 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 528 | Whitson, Tyler (1548) | Lost 1-2 | -161466 |
| 2modern | 811 | Russell, Brandon (1415) | Won 2-0 | +171483 |
| 3modern | 759 | Abraham, Cassius (1500) | Won 2-0 | +181501 |
| 4modern | 551 | Biala, Lito (1433) | Lost 1-2 | -191482 |
| 5modern | 638 | Ghouth, Yusef (1522) | Lost 1-2 | -181464 |
| 6modern | 763 | Torres, Angelo (1486) | Won 2-0 | +191483 |
| 7modern | 592 | Stroven, Rye (1499) | Won 2-1 | +181501 |
| 8modern | 389 | Zang, Shaochen (1519) | Lost 0-2 | -181483 |
| 9modern | 499 | Sun, Qiushi (1609) | Lost 0-2 | -151468 |
| top | average opponent: 1503record: 4-5 | new rating: 1468 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Garfoot, Bryan (1500) | Lost 0-2 | -181501 |
| 2sealed | 371 | Ellingsen, Joanne (1482) | Won 2-1 | +181519 |
| 3sealed | 339 | Marquez, Robert (1546) | Lost 0-2 | -181501 |
| 4sealed | 314 | Glassett, Bradley (1480) | Won 2-0 | +181519 |
| 5sealed | 285 | O'Brien, Andrew (1514) | Lost 1-2 | -181501 |
| 6sealed | 30 | Davis, Kristopher (1483) | Lost 0-2 | -191482 |
| top | average opponent: 1501record: 2-4 | new rating: 1482 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 117 | Parham, Dominique (1500) | Won 2-1 | +181518 |
| 2standard | 253 | Kemper, Kyle (1542) | Lost 1-2 | -181500 |
| 3standard | 614 | Tafoya, Michael (1612) | Lost 1-2 | -161484 |
| 4standard | 745 | Nava, Kathleen (1482) | Won 2-1 | +181502 |
| 5standard | 398 | Kikta Jr., Mark (1465) | Won 2-0 | +181520 |
| 6standard | 321 | Rubin, Aaron 2 (1503) | Draw 1-1 | -11519 |
| 7standard | 357 | McCaskill, Andrew (1515) | Won 2-1 | +181537 |
| 8standard | 253 | Gu, Xin (1535) | Lost 0-2 | -181519 |
| top | average opponent: 1519record: 4-3-1 | new rating: 1519 | ||