Welty, Jaramiah
Current rating: 1567
Record: 42-38-1
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 512 | Wada, Yuusaku (1449) | Lost 0-2 | -221610 |
| 2sealed | 635 | Harada, Yugo (1521) | Won 2-1 | +171627 |
| 3sealed | 878 | Suzuki, Takuya 1104 (1413) | Lost 0-2 | -221605 |
| 4sealed | 1007 | Kodera, Yasunori (1589) | Lost 0-2 | -191586 |
| 5sealed | 960 | Kanamura, Hiroyuki (1491) | Lost 1-2 | -191567 |
| top | average opponent: 1493record: 1-4 | new rating: 1567 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 526 | Wadamori, Keisuke (1498) | Won 2-1 | +171592 |
| 2modern | 386 | Muneishi, Hideaki (1421) | Won 2-1 | +151607 |
| 3modern | 341 | Yan, Wai Lap (1606) | Lost 0-2 | -181589 |
| 4modern | 636 | Mori, Takeshi (1698) | Won 2-1 | +201609 |
| 5modern | 509 | Ueno, Noriyasu (1500) | Won 2-1 | +161625 |
| 6modern | 95 | Itou, Kouei (1726) | Won 2-0 | +201645 |
| 7modern | 205 | Takahashi, Jun (1707) | Lost 1-2 | -171628 |
| 8modern | 365 | Yuba, Takayuki (1629) | Won 2-0 | +181646 |
| 9modern | 248 | Umemura, Kazuki (1518) | Won 2-1 | +151661 |
| 10modern | 143 | Natsume, Takuya (1699) | Lost 0-2 | -171644 |
| 11modern | 181 | Osawa, Takuya (1956) | Lost 0-2 | -121632 |
| top | average opponent: 1633record: 7-4 | new rating: 1632 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1580 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 137 | Puhakka, Mika (1486) | Won 2-0 | +161596 |
| 3sealed | 566 | Saito, Toru (1533) | Lost 0-2 | -191577 |
| 4sealed | 548 | Kashi, Touru (1503) | Won 2-1 | +171594 |
| 5sealed | 310 | Masato, Iizuka (1542) | Won 2-0 | +171611 |
| 6sealed | 196 | Morishita, Mizuki (1694) | Won 2-1 | +191630 |
| 7sealed | 61 | Takakuwa, Akihiro (1678) | Lost 1-2 | -171613 |
| 8sealed | 198 | Hirayama, Shigetaka (1560) | Lost 0-2 | -191594 |
| 9sealed | 488 | Wada, Tomoya (1545) | Lost 1-2 | -191575 |
| top | average opponent: 1568record: 4-4 | new rating: 1575 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 247 | Shiraishi, Masaharu (1745) | Won 2-1 | +221558 |
| 3sealed | 102 | Kanazawa, Shuu (1601) | Won 2-0 | +191577 |
| 4sealed | 53 | Okino, Ryuu (1628) | Lost 0-2 | -171560 |
| 5sealed | 76 | Kondou, Masaru (1607) | Lost 1-2 | -171543 |
| 6sealed | 216 | Noge, Hayata (1549) | Won 2-0 | +181561 |
| 7sealed | 202 | Matsuo, Akiyoshi (1571) | Won 2-1 | +181579 |
| 8sealed | 109 | Minobe, Yoshihiro (1656) | Lost 0-2 | -171562 |
| 9sealed | 133 | Itou, Takeshi (1523) | Won 2-0 | +181580 |
| top | average opponent: 1610record: 5-3 | new rating: 1580 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 647 | Samaru, Takafumi (1523) | Won 2-1 | +181556 |
| 3sealed | 607 | Morishita, Yoshihisa (1556) | Lost 0-2 | -181538 |
| 4sealed | 854 | Shibata, Yuuya (1526) | Lost 1-2 | -181520 |
| 5sealed | 903 | Kuribayashi, Tatsunori (1520) | Won 2-0 | +181538 |
| 6sealed | 835 | Toriuchi, Daizo (1427) | Won 2-0 | +161554 |
| 7sealed | 734 | Okumura, Yuji (1539) | Lost 0-2 | -191535 |
| 8sealed | 781 | Okamura, Ryoma (1602) | Lost 0-2 | -161519 |
| 9sealed | 788 | Sakurai, Shinya (1503) | Won 2-0 | +171536 |
| top | average opponent: 1524record: 4-4 | new rating: 1536 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1005 | Higashida, Taketo (1446) | Lost 0-2 | -191508 |
| 2modern | 1124 | Umeki, Ryo (1444) | Lost 0-2 | -191489 |
| 3modern | 1250 | Hanada, Yuu (1493) | Won 2-0 | +181507 |
| 4modern | 1080 | Fujii, Kento (1480) | Won 2-0 | +171524 |
| 5modern | 955 | Fujita, Kenji (1438) | Won 2-0 | +171541 |
| 6modern | 909 | Ishino, Katsunori (1476) | Won 2-1 | +171558 |
| 7modern | 905 | Tai, Akio (1498) | Lost 1-2 | -201538 |
| 8modern | 876 | Furujou, Takashi (1464) | Won 2-0 | +171555 |
| 9modern | 868 | Koshimura, Takeshi (1619) | Lost 0-2 | -171538 |
| top | average opponent: 1484record: 5-4 | new rating: 1538 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 636 | Akabame, Sho (1537) | Won 2-0 | +181544 |
| 3sealed | 610 | Endo, Jun'Ichi (1754) | Lost 0-2 | -141530 |
| 4sealed | 696 | Kawashita, Makoto (1522) | Lost 0-2 | -191511 |
| 5sealed | 751 | Ito, Jun (1498) | Lost 0-2 | -181493 |
| 6sealed | 793 | Fujita, Toshitake (1466) | Won 2-1 | +181511 |
| 7sealed | 735 | Nishikawa, Haruyoshi (1436) | Won 2-1 | +161527 |
| top | average opponent: 1535record: 3-3 | new rating: 1527 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 701 | Shiraishi, Ryou (1639) | Won 2-0 | +211487 |
| 2standard | 647 | Ohtani, Yuya (1620) | Lost 1-2 | -161471 |
| 3standard | 852 | Hori, Keisuke (1426) | Won 2-1 | +171488 |
| 4standard | 698 | Goto, Daiki (1495) | Won 2-1 | +181506 |
| 5standard | 607 | Matsuzaki, Eiji (1484) | Won 2-0 | +181524 |
| 6standard | 603 | Fukuda, Masahiro (1573) | Won 2-1 | +191543 |
| 7standard | 541 | Hayakawa, Sho (1516) | Lost 1-2 | -191524 |
| 8standard | 579 | Miyawaki, Takahiro (1565) | Won 2-1 | +191543 |
| 9standard | 689 | Kojima, Yukitaka (1567) | Lost 1-2 | -171526 |
| top | average opponent: 1543record: 6-3 | new rating: 1526 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 410 | Hayashi, Yuusuke (1539) | Won 2-1 | +191500 |
| 2standard | 118 | Ito, Daisuke (1554) | Lost 1-2 | -171483 |
| 3standard | 376 | Kanayama, Haruki (1507) | Lost 1-2 | -171466 |
| 4standard | 731 | Nakamura, Kouki (1481) | Draw 1-1 | 01466 |
| 5standard | 633 | Kimura, Tomoyuki (1431) | Won 2-1 | +171483 |
| 6standard | 507 | Azuma, Yuudai (1495) | Lost 0-2 | -171466 |
| top | average opponent: 1501record: 2-3-1 | new rating: 1466 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 8 | Yamamoto, Kenta (1500) | Lost 0-2 | -181500 |
| 2sealed | 419 | Takehana, Yuki (1498) | Won 2-0 | +181518 |
| 3sealed | 302 | Okabayashi, Masanao (1516) | Lost 1-2 | -181500 |
| 4sealed | 423 | Tamai, Yuno (1483) | Lost 0-2 | -191481 |
| top | average opponent: 1499record: 1-3 | new rating: 1481 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 573 | Newby, Andrew (1500) | Won 2-1 | +181518 |
| 2sealed | 424 | Vance, James (1611) | Lost 0-2 | -161502 |
| 3sealed | 512 | Smith, Brenda (1500) | Won 2-1 | +181520 |
| 4sealed | 459 | Nida, Eric R (1533) | Won 2-0 | +181538 |
| 5sealed | 437 | Bouchard, Maximilien (1491) | Lost 0-2 | -191519 |
| 6sealed | 451 | Breau, Chris (1506) | Won 2-0 | +181537 |
| 7sealed | 427 | Kestenberg, Lee (1493) | Lost 0-2 | -191518 |
| top | average opponent: 1519record: 4-3 | new rating: 1518 | ||