Ahrens, Jonathan
Current rating: 1598
Record: 32-28-2
| Grand Prix Portland 2018 (modern) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 276 | Aalvik, Zakory (1516) | Won 2-1 | +161641 |
| 3modern | 105 | Dubyk, Dilon (1609) | Lost 0-2 | -191622 |
| 4modern | 250 | Hibbert, Paul (1518) | Won 2-1 | +161638 |
| 5modern | 358 | Griswold, Lucas (1546) | Lost 1-2 | -191619 |
| 6modern | 405 | Kohrt, Ronnie (1449) | Lost 0-2 | -211598 |
| top | average opponent: 1528record: 2-3 | new rating: 1598 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1616 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 278 | Brewer, Robert (1532) | Lost 1-2 | -201596 |
| 3legacy | 409 | Muetterties, Dylan (1502) | Won 2-1 | +171613 |
| 4legacy | 311 | Nelson, James (1531) | Won 2-0 | +161629 |
| 5legacy | 334 | Biaggi, Andrea (1572) | Won 2-1 | +171646 |
| 6legacy | 110 | McDaniel, Charles (1784) | Lost 1-2 | -161630 |
| 7legacy | 338 | Zoeckler, Leo (1554) | Won 2-1 | +171647 |
| 8legacy | 132 | Ceccarelli, Gregory (1550) | Won 2-1 | +161663 |
| 9legacy | 1061 | Lysenko, Jesse (1685) | Lost 0-2 | -171646 |
| 10legacy | 1145 | Garcia, Joseph (1559) | Won 2-0 | +161662 |
| 11legacy | 1120 | Hickey, Brenden (1637) | Lost 0-2 | -181644 |
| 12legacy | 1096 | Shilander, Robert (1600) | Lost 0-2 | -191625 |
| top | average opponent: 1591record: 6-5 | new rating: 1625 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1629 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 357 | Pikula, Chris (1995) | Won 2-1 | +251654 |
| 4modern | 130 | Brooks, Jacob (1605) | Lost 1-2 | -191635 |
| 5modern | 688 | Barlog, David (1631) | Lost 1-2 | -181617 |
| 6modern | 514 | Keeth, Christian (1852) | Won 2-1 | +221639 |
| 7modern | 2136 | Bartholdi, Maria (1563) | Lost 1-2 | -191620 |
| 8modern | 595 | Lerman, Tyler (1523) | Won 2-0 | +161636 |
| 9modern | 375 | Pina-Lira, Esteban (1523) | Lost 1-2 | -201616 |
| top | average opponent: 1670record: 3-4 | new rating: 1616 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 446 | Prudhomme, Nick (1667) | Lost 1-2 | -161543 |
| 4legacy | 703 | Ingram, Michael (1511) | Won 2-0 | +171560 |
| 5legacy | 210 | Lewis, Mike (1679) | Won 2-1 | +211581 |
| 6legacy | 218 | Wiper, Charles (1795) | Won 2-1 | +211602 |
| 7legacy | 60 | Goddard, Maxwell (1727) | Lost 0-2 | -151587 |
| 8legacy | 322 | Trice, Jason (1491) | Won 2-0 | +161603 |
| 9legacy | 84 | Kaida-Yip, Ned (1602) | Lost 1-2 | -181585 |
| 10legacy | 203 | Cabanero, Erik (1652) | Won 2-0 | +191604 |
| 11legacy | 193 | Raniga, Jitesh (1655) | Won 2-1 | +191623 |
| 12legacy | 144 | Stan, Robert (1750) | Lost 1-2 | -161607 |
| 13legacy | 158 | Kim, Pitter (1579) | Lost 0-2 | -181589 |
| 14legacy | 207 | Roberson, Michael (1503) | Won 2-0 | +161605 |
| 15legacy | 148 | Long, Matthew (1948) | Won 2-1 | +241629 |
| top | average opponent: 1658record: 8-5 | new rating: 1629 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 138 | Gulevich, Aaron (1486) | Won 2-1 | +171550 |
| 2modern | 310 | Levin, Eugene (1733) | Lost 0-2 | -151535 |
| 3modern | 631 | Scholz, Mark (1498) | Won 2-1 | +181553 |
| 4modern | 496 | Travis, Timothy (1491) | Won 2-0 | +171570 |
| 5modern | 213 | Allen, Jacob (1550) | Lost 1-2 | -191551 |
| 6modern | 452 | Jiang, Zhihao (1522) | Won 2-1 | +181569 |
| 7modern | 293 | Takao, Shota (1855) | Lost 0-2 | -131556 |
| 8modern | 405 | Chrisman, Corey (1517) | Won 2-1 | +171573 |
| 9modern | 451 | Hughes, John (1531) | Won 2-0 | +171590 |
| 10modern | 281 | Zubay, Joseph (1555) | Lost 1-2 | -181572 |
| 11modern | 280 | Kastner, Donald (1870) | Lost 0-2 | -131559 |
| top | average opponent: 1601record: 6-5 | new rating: 1559 | ||
| Grand Prix Seattle-Tacoma 2015 (legacy) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 41 | Pettross, Luke (1600) | Won 2-0 | +201469 |
| 2legacy | 397 | Park, Andrew (1519) | Won 2-0 | +191488 |
| 3legacy | 66 | Marucci, Joe (1448) | Lost 1-2 | -191469 |
| 4legacy | 287 | Olson, Kyle (1775) | Draw 1-1 | +61475 |
| 5legacy | 417 | Ridgeway, Eric (1517) | Won 2-1 | +191494 |
| 6legacy | 256 | O'Brien, Sean (1472) | Won 2-0 | +171511 |
| 7legacy | 160 | Brady, Kyle (1553) | Won 2-1 | +191530 |
| 8legacy | 84 | Chase, Andy (1535) | Won 2-0 | +181548 |
| 9legacy | 54 | Ling, Matthew (1712) | Lost 1-2 | -151533 |
| top | average opponent: 1570record: 6-2-1 | new rating: 1533 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 79 | Mazoch, Eric (1688) | Lost 1-2 | -151485 |
| 4sealed | 153 | Alter, Justin (1518) | Won 2-1 | +191504 |
| 5sealed | 104 | Hibbs, Brett (1433) | Lost 0-2 | -191485 |
| 6sealed | 189 | Desangles, Anthony (1484) | Lost 0-2 | -181467 |
| 7sealed | 272 | Niehaus, Zach (1498) | Draw 1-1 | 01467 |
| 8sealed | 197 | Nelson, Mike (1427) | Lost 0-2 | -181449 |
| top | average opponent: 1508record: 1-4-1 | new rating: 1449 | ||