Ikoma, Toshio
Current rating: 1445
Record: 13-18
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 294 | Itou, Takanori (1621) | Lost 0-2 | -151420 |
| 2pioneer | 437 | Kondo, Yusuke (1398) | Won 2-0 | +181438 |
| 3pioneer | 634 | Matumura, Hirohumi (1662) | Lost 0-2 | -141424 |
| 4pioneer | 632 | Ibushi, Shotaro (1596) | Won 2-0 | +211445 |
| 5pioneer | 645 | Kukino, Yudai (1420) | Won 2-1 | +181463 |
| 6pioneer | 433 | Matsuzaki, Eiji (1453) | Lost 0-2 | -181445 |
| top | average opponent: 1525record: 3-3 | new rating: 1445 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 279 | Fukushima, Naoya (1558) | Lost 0-2 | -161414 |
| 2modern | 770 | Nakayama, Hiroki (1482) | Won 2-0 | +191433 |
| 3modern | 931 | Ikeyama, Kei (1469) | Lost 0-2 | -171416 |
| 4modern | 843 | Nakamura, Kouki 9697 (1485) | Lost 1-2 | -171399 |
| 5modern | 996 | Yoshizawa, Keita (1473) | Won 2-1 | +201419 |
| 6modern | 776 | Tanaka, Tomonori (1329) | Won 2-0 | +161435 |
| top | average opponent: 1466record: 3-3 | new rating: 1435 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 59 | Shinozaki, Tomohiro (1501) | Won 2-1 | +191452 |
| 2legacy | 112 | Date, Hiroshi (1708) | Lost 1-2 | -131439 |
| 3legacy | 624 | Maeno.J, Kazushi (1525) | Lost 1-2 | -171422 |
| 4legacy | 879 | Murakami, Gen (1478) | Won 2-1 | +191441 |
| 5legacy | 811 | Tamura, Ryo (1763) | Lost 0-2 | -121429 |
| 6legacy | 853 | Shimizu, Takeo (1485) | Lost 1-2 | -171412 |
| 7legacy | 882 | Watanabe, Atsuhiro (1399) | Won 2-1 | +181430 |
| top | average opponent: 1551record: 3-4 | new rating: 1430 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2389 | Furuuchi, Kaoru (1440) | Lost 0-2 | -181451 |
| 2sealed | 2385 | Yoshizaki, Hiroki (1430) | Won 2-1 | +181469 |
| 3sealed | 2377 | Kawaragi, Ryousuke (1500) | Won 2-0 | +181487 |
| 4sealed | 2276 | Yamazaki, Tomotaka (1516) | Lost 0-2 | -171470 |
| 5sealed | 2321 | Yamashita, Yusuke (1497) | Lost 1-2 | -181452 |
| 6sealed | 2288 | Katamine, Kentarou (1393) | Lost 0-2 | -191433 |
| top | average opponent: 1463record: 2-4 | new rating: 1433 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 688 | Yoshida, Atsushi (1514) | Lost 0-2 | -181482 |
| 2legacy | 859 | Nagao, Kengo (1687) | Won 2-1 | +221504 |
| 3legacy | 771 | Nakagawa, Hikaru (1450) | Lost 0-2 | -191485 |
| 4legacy | 918 | Yamagata, Yutaro (1612) | Lost 0-2 | -161469 |
| 5legacy | 887 | Narita, Akihiro (1468) | Lost 1-2 | -181451 |
| 6legacy | 883 | Sano, Toshirou (1462) | Won 2-1 | +181469 |
| top | average opponent: 1533record: 2-4 | new rating: 1469 | ||