Marumo, Tsubasa
Current rating: 1593
Record: 22-19
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 35 | Marcella, William (1525) | Won 2-0 | +171592 |
| 3legacy | 66 | Syed, Zan (1924) | Won 2-0 | +231615 |
| 4legacy | 28 | Lawson, Wade (1662) | Lost 0-2 | -171598 |
| 5legacy | 101 | Shiflett, Chris (1510) | Won 2-1 | +171615 |
| 6legacy | 128 | Brumby, Gene (1598) | Won 2-1 | +171632 |
| 7legacy | 58 | Passino, Benjamin (1547) | Lost 0-2 | -191613 |
| 8legacy | 79 | Sumrow, Stephen (1600) | Won 2-1 | +181631 |
| 9legacy | 43 | Sharich, James (1495) | Lost 0-2 | -211610 |
| 10legacy | 67 | Foster, Calvin (1653) | Lost 0-2 | -171593 |
| top | average opponent: 1613record: 5-4 | new rating: 1593 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 778 | Hoshi, Masaru (1419) | Won 2-1 | +161550 |
| 2modern | 511 | Takakura, Eigo (1503) | Won 2-0 | +171567 |
| 3modern | 215 | Tsuruta, Tatsunori (1520) | Lost 1-2 | -191548 |
| 4modern | 468 | Senba, Kotaro (1933) | Lost 0-2 | -111537 |
| 5modern | 878 | Ishizeki, Masaki (1550) | Lost 0-2 | -181519 |
| 6modern | 822 | Hayashi, Yuhei (1694) | Won 2-0 | +221541 |
| 7modern | 546 | Yamamoto, Masayuki (1513) | Won 2-1 | +171558 |
| 8modern | 380 | Matsui, Hideyuki (1477) | Won 2-0 | +171575 |
| top | average opponent: 1576record: 5-3 | new rating: 1575 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 376 | Yamasita, Akira (1444) | Won 2-0 | +181461 |
| 2legacy | 28 | Yamada, Yasushi (1622) | Won 2-0 | +211482 |
| 3legacy | 88 | Lee, Joon Soo (1798) | Lost 0-2 | -121470 |
| 4legacy | 366 | Hattori, Taiki (1639) | Won 2-1 | +211491 |
| 5legacy | 83 | Rosser-Jones, Luke (1526) | Won 2-1 | +181509 |
| 6legacy | 43 | Kouno, Masami (1593) | Won 2-0 | +201529 |
| 7legacy | 22 | Kobayashi, Jotaro (1752) | Won 2-0 | +221551 |
| 8legacy | 33 | Yasuda, Masayuki (1871) | Lost 1-2 | -121539 |
| 9legacy | 85 | Lu, Pengjie (1754) | Won 2-0 | +211560 |
| 10legacy | 63 | Saito, Atsushi (1421) | Won 2-1 | +161576 |
| 11legacy | 28 | Suzuki, Takahiro 3362 (1613) | Lost 1-2 | -171559 |
| 12legacy | 72 | Morofuji, Takuma (2094) | Lost 1-2 | -91550 |
| 13legacy | 68 | Orimo, Yuto (1667) | Lost 0-2 | -161534 |
| 14legacy | 82 | Hirosawa, Yuki (1454) | Won 2-0 | +161550 |
| 15legacy | 68 | Hasegawa, Kay (1662) | Lost 1-2 | -161534 |
| top | average opponent: 1661record: 9-6 | new rating: 1534 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 601 | Saito, Shinnosuke (1432) | Lost 1-2 | -191481 |
| 2legacy | 811 | Yamamoto, Masashi3201 (1484) | Lost 0-2 | -181463 |
| 3legacy | 1100 | Oohara, Masahumi (1435) | Lost 1-2 | -191444 |
| 4legacy | 1120 | Higashi, Shohei (1513) | Lost 1-2 | -161428 |
| 5legacy | 1129 | Tanaka, Yoshiyuki (1436) | Lost 1-2 | -181410 |
| 6legacy | 1075 | Kurosawa, Kosuke (1413) | Won 2-0 | +181428 |
| 7legacy | 971 | Kajita, Hiroki (1390) | Won 2-0 | +171445 |
| 8legacy | 859 | Nakamura, Satoshi (1494) | Lost 1-2 | -171428 |
| 9legacy | 769 | Suzuki, Takahisa (1277) | Won 2-0 | +151443 |
| top | average opponent: 1430record: 3-6 | new rating: 1443 | ||