Ando, Koyo
Current rating: 1514
Record: 31-30-5
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 17 | Li, Tenghui (1500) | Won 2-1 | +171564 |
| 2sealed | 207 | Hirose, Yuuki (1900) | Lost 1-2 | -121552 |
| 3sealed | 662 | Kato, Hiroki 9577 (1501) | Lost 1-2 | -191533 |
| 4sealed | 896 | Masumoto, Kazuhiro (1501) | Lost 0-2 | -191514 |
| top | average opponent: 1600record: 1-3 | new rating: 1514 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 29 | Ogata, Satoshi (1534) | Won 2-0 | +181551 |
| 2legacy | 209 | Yoshikawa, Toshiyuki (1519) | Lost 1-2 | -181533 |
| 3legacy | 337 | Oku, Yusuke (1394) | Won 2-1 | +151548 |
| 4legacy | 301 | Maruyama, Yuichiro (1553) | Draw 1-1 | 01548 |
| 5legacy | 207 | Yoshii, Shunsuke (1489) | Won 2-0 | +171565 |
| 6legacy | 134 | Koumura, Masaki (1539) | Lost 0-2 | -181547 |
| top | average opponent: 1505record: 3-2-1 | new rating: 1547 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 99 | Wada, Masafumi (1500) | Won 2-1 | +171572 |
| 2sealed | 29 | Park, Hyun-myung (1525) | Lost 1-2 | -191553 |
| 3sealed | 256 | Jinno, Kaname (1466) | Lost 1-2 | -201533 |
| top | average opponent: 1497record: 1-2 | new rating: 1533 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1616 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 13 | Asano, Jun'ya (1476) | Lost 1-2 | -201596 |
| 2standard | 334 | Banba, Taiki (1417) | Lost 1-2 | -211575 |
| 3standard | 488 | Tsutayama, Tomoya (1469) | Lost 1-2 | -201555 |
| top | average opponent: 1454record: 0-3 | new rating: 1555 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1606 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 962 | Kobori, Masaaki (1491) | Won 2-1 | +161622 |
| 2sealed | 739 | Goto, Takashi (1455) | Lost 0-2 | -211601 |
| 3sealed | 917 | Penilla, John R (1498) | Won 2-1 | +161617 |
| 4sealed | 858 | Fukumoto, Tsuyoshi (1517) | Won 2-1 | +171634 |
| 5sealed | 867 | Kakizaki, Ryuuki (1536) | Lost 0-2 | -201614 |
| 6sealed | 889 | Aihara, Shogaku (1641) | Won 2-0 | +181632 |
| 7sealed | 743 | Ishii, Taisuke (1750) | Lost 1-2 | -161616 |
| top | average opponent: 1556record: 4-3 | new rating: 1616 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 269 | Shiba, Joutarou (1476) | Won 2-0 | +171560 |
| 2modern | 199 | Mizutani, Naoto (1563) | Won 2-0 | +181578 |
| 3modern | 14 | Tsuba, Yuuki (1698) | Won 2-0 | +201598 |
| 4modern | 5 | Nagaoka, Takayuki (1873) | Won 2-1 | +231621 |
| 5modern | 4 | Yukuhiro, Ken (2063) | Lost 0-2 | -111610 |
| 6modern | 54 | Suzuki, Tatsuya (1462) | Won 2-0 | +161626 |
| 7modern | 64 | Narita, Yasumasa (1565) | Lost 0-2 | -201606 |
| top | average opponent: 1672record: 5-2 | new rating: 1606 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 67 | Shimada, Hiroya (1626) | Draw 1-1 | +31488 |
| 2standard | 180 | Atsushi K., (1500) | Won 2-0 | +181506 |
| 3standard | 105 | Lemmon, Andrew (1483) | Won 2-0 | +181524 |
| 4standard | 121 | Shougo I., (1537) | Lost 1-2 | -181506 |
| 5standard | 187 | Ootani, Tomohiro (1504) | Won 2-0 | +181524 |
| 6standard | 123 | Hattori, Taiki (1613) | Lost 0-2 | -171507 |
| 7standard | 179 | Sasaki, Tsuyoshi (1520) | Won 2-0 | +191526 |
| 8standard | 127 | Machida, Takatoshi (1420) | Won 2-0 | +161542 |
| 9standard | 87 | Mitsuyasu, Hidetoshi (1595) | Draw 1-1 | +11543 |
| top | average opponent: 1533record: 5-2-2 | new rating: 1543 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 2 | Shiota, Akihiko (1444) | Won 2-1 | +171541 |
| 2standard | 54 | Nakagawa, Shinichi (1517) | Won 2-0 | +171558 |
| 3standard | 82 | Sakurai, Kenichi (1534) | Lost 0-2 | -181540 |
| 4standard | 165 | Miyauchi, Makoto (1517) | Lost 1-2 | -181522 |
| 5standard | 281 | Kodama, Hironori (1519) | Lost 1-2 | -181504 |
| 6standard | 283 | Murata, Atsushi (1488) | Lost 1-2 | -191485 |
| top | average opponent: 1503record: 2-4 | new rating: 1485 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 30 | Kaneko, Masayuki (1523) | Lost 0-2 | -181525 |
| 2extended | 459 | Furihara, Kazuki (1484) | Draw 1-1 | -11524 |
| top | average opponent: 1503record: 0-1-1 | new rating: 1524 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 262 | Mori, Takashi 2 (1500) | Won 2-1 | +171545 |
| 2standard | 197 | Natsume, Takuya (1534) | Lost 1-2 | -181527 |
| 3standard | 227 | Noguchi, Masami (1478) | Won 2-1 | +171544 |
| 4standard | 279 | Toyama, Masayuki (1519) | Won 2-0 | +181562 |
| 5standard | 79 | Tanaka, Yuuya (1538) | Lost 0-2 | -191543 |
| top | average opponent: 1514record: 3-2 | new rating: 1543 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 20 | Kiyotaki, Masahiro (1500) | Won 2-1 | +181518 |
| 2block | 142 | Sekine, Morio (1520) | Lost 0-2 | -181500 |
| 3block | 214 | Ozaki, Hironori (1482) | Won 2-1 | +181518 |
| 4block | 126 | Tateno, Shouta (1520) | Won 2-1 | +181536 |
| 5block | 125 | Kozakai, Yukio (1562) | Lost 1-2 | -181518 |
| 6block | 143 | Koji, Kazumasa (1598) | Won 2-1 | +201538 |
| 7block | 122 | Bandou, Junichirou (1571) | Won 2-1 | +181556 |
| 8block | 52 | Nakahara, Yuuya (1539) | Won 2-1 | +181574 |
| 9block | 29 | Ishii, Taisuke (1617) | Lost 0-2 | -171557 |
| 10block | 61 | Taniguchi, Tomoya (1583) | Lost 1-2 | -181539 |
| 11block | 98 | Shimada, Masatake (1698) | Draw 1-1 | +31542 |
| 12block | 94 | Ogami, Kenji (1627) | Won 2-1 | +201562 |
| 13block | 75 | Yun, Suhan (1612) | Lost 1-2 | -171545 |
| 14block | 77 | Yamazaki, Hiroyuki (1621) | Lost 0-2 | -171528 |
| top | average opponent: 1575record: 7-6-1 | new rating: 1528 | ||