Tai, Akio
Current rating: 1497
Record: 30-33
| Grand Prix Yokohama 2019 (modern) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 753 | Ichinose, Yuki (1450) | Won 2-0 | +171507 |
| 2modern | 207 | Poon, Tsz Sum (1518) | Won 2-0 | +181525 |
| 3modern | 503 | Suzuki, Kazuhiro 1097 (1571) | Won 2-1 | +191544 |
| 4modern | 195 | Hayashi, Takatomo (1725) | Won 2-1 | +211565 |
| 5modern | 81 | Higuchi, Akashi (1743) | Lost 0-2 | -141551 |
| 6modern | 289 | Takamiya, Kazuya (1497) | Lost 0-2 | -191532 |
| 7modern | 490 | Karwoski, Andy (1536) | Lost 0-2 | -181514 |
| 8modern | 414 | Nishikawa, Ryota (1582) | Lost 1-2 | -171497 |
| top | average opponent: 1578record: 4-4 | new rating: 1497 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 359 | Shinohara, Gen 8933 (1530) | Won 2-0 | +191464 |
| 4modern | 204 | Miotani, Tomoya (1693) | Lost 1-2 | -141450 |
| 5modern | 608 | Nakamura, Koudai (1477) | Lost 1-2 | -171433 |
| 6modern | 436 | Mori, Hisayuki (1468) | Won 2-1 | +181451 |
| 7modern | 512 | Sakai, Ryou (1592) | Lost 1-2 | -151436 |
| 8modern | 563 | Hariu, Daichi (1474) | Won 2-1 | +191455 |
| 9modern | 497 | Tsuda, Tomohiro (1634) | Won 2-1 | +211476 |
| 10modern | 201 | Kabashima, Takuya (1586) | Lost 1-2 | -161460 |
| 11modern | 358 | Urase, Ryosuke (1834) | Lost 0-2 | -121448 |
| 12modern | 331 | Suzuki, Takuya 2595 (1488) | Won 2-1 | +191467 |
| 13modern | 275 | Horigome, Ryoma (1532) | Won 2-0 | +191486 |
| 14modern | 202 | Shibata, Hirotaka (1645) | Lost 0-2 | -151471 |
| 15modern | 228 | Wada, Yuta (1504) | Won 2-0 | +191490 |
| top | average opponent: 1574record: 7-6 | new rating: 1490 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 605 | Minoshima, Takenori (1529) | Lost 1-2 | -171462 |
| 2standard | 669 | Norikazu, Nishina (1484) | Lost 1-2 | -181444 |
| 3standard | 1178 | Hosoda, Daiki (1495) | Lost 1-2 | -171427 |
| 4standard | 1170 | Maeda, Kotaro (1391) | Won 2-0 | +181445 |
| top | average opponent: 1474record: 1-3 | new rating: 1445 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 705 | Kurosu, Kazuki (1409) | Lost 1-2 | -201499 |
| 2sealed | 971 | Makigano, Motohiro (1480) | Won 2-1 | +171516 |
| 3sealed | 969 | Sasaki, Daisuke (1394) | Lost 1-2 | -201496 |
| 4sealed | 1026 | Iwata, Futoshi (1558) | Lost 0-2 | -171479 |
| top | average opponent: 1460record: 1-3 | new rating: 1479 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1096 | Yonezawa, Seizi (1500) | Won 2-1 | +191476 |
| 2modern | 845 | Takaishi, Yuutarou (1519) | Lost 1-2 | -181458 |
| 3modern | 1020 | Takahashi, Ryouhei (1497) | Won 2-1 | +191477 |
| 4modern | 901 | Nomura, Tsuyoshi (1518) | Won 2-1 | +191496 |
| 5modern | 890 | Tada, Mitsuhiro (1515) | Lost 0-2 | -181478 |
| 6modern | 956 | Kitajima, Ryoko (1556) | Won 2-0 | +201498 |
| 7modern | 905 | Welty, Jaramiah (1558) | Won 2-1 | +191517 |
| 8modern | 832 | Agata, Tatsuki (1556) | Won 2-1 | +181535 |
| 9modern | 779 | Kim, Chan-wook (1595) | Lost 0-2 | -161519 |
| top | average opponent: 1535record: 6-3 | new rating: 1519 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 102 | Matsuyama, Takuya (1463) | Lost 1-2 | -191472 |
| 2standard | 583 | Yamamoto, Makoto (1521) | Lost 0-2 | -171455 |
| 3standard | 686 | Asami, Masakazu (1503) | Won 2-0 | +191474 |
| 4standard | 714 | Minobe, Yoshihiro (1521) | Lost 1-2 | -171457 |
| top | average opponent: 1502record: 1-3 | new rating: 1457 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 134 | Asami, Masakazu (1585) | Won 2-0 | +191526 |
| 2modern | 336 | Takahashi, Kenta (1513) | Won 2-1 | +181544 |
| 3modern | 79 | Tamura, Hajime (1502) | Lost 1-2 | -191525 |
| 4modern | 434 | Nakamura, Satoshi (1556) | Won 2-0 | +191544 |
| 5modern | 255 | Kobayashi, Takahito (1678) | Lost 0-2 | -161528 |
| 6modern | 405 | Nakada, Ryo (1547) | Lost 0-2 | -171511 |
| 7modern | 354 | Kobayashi, Shougo (1384) | Won 2-0 | +151526 |
| 8modern | 241 | Hirata, Minoru (1625) | Lost 1-2 | -161510 |
| 9modern | 245 | Tokunaga, Hiroki (1436) | Lost 0-2 | -191491 |
| top | average opponent: 1536record: 4-5 | new rating: 1491 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 95 | Yamada, Yousuke (1520) | Lost 0-2 | -191546 |
| 3sealed | 292 | Uno, Hiroaki (1501) | Lost 1-2 | -191527 |
| 4sealed | 466 | Sasaki, Satoru (1388) | Lost 0-2 | -201507 |
| top | average opponent: 1469record: 0-3 | new rating: 1507 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 194 | Itou, Shigehito (1543) | Won 2-0 | +191519 |
| 2standard | 75 | Kaga, Hiroyuki (1500) | Won 2-0 | +171536 |
| 3standard | 20 | Biwaki, Toshiaki (1643) | Won 2-1 | +201556 |
| 4standard | 88 | Masuno, Ryosuke (1834) | Lost 0-2 | -131543 |
| 5standard | 98 | Takanashi, Kouji (1681) | Lost 1-2 | -151528 |
| 6standard | 161 | Urata, Takurou (1541) | Won 2-0 | +181546 |
| 7standard | 166 | Kubouchi, Hayato (1533) | Won 2-1 | +181564 |
| 8standard | 59 | Wada, Yuki (1575) | Won 2-0 | +181582 |
| 9standard | 69 | Yasuda, Masayuki (1636) | Lost 0-2 | -171565 |
| top | average opponent: 1609record: 6-3 | new rating: 1565 | ||