People · Japan
Masato Kubota (久保田雅斗)
3×3 · top 11.0% of 284,439 all-time · competing since April 2025 · 2025KUBO01
Masato Kubota (久保田雅斗) has been competing for a year. His best event is the 3×3: a personal-best single of 11.17, set at Kanto Autumn AM 2025, puts him in the top 11.0% of the 284,439 people who have ever been ranked in the event, and 475th in Japan. Across 3 competitions since April 2025, he has put 17 official solves on the record across four events. His 3×3 best has come down from 16.63 in April 2025 to 11.17, a 33% improvement. Masato has entered three competitions, more competitions than 69% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| 3×3 | 11.17 | 17.71 | top 11.0% | 475 / 3,329 | |
| Skewb | 6.87 | 8.89 | top 32.6% | 166 / 338 | |
| 3×3 blindfolded | 2:18.39 | — | early days — 1 solve | 157 / 282 | |
| 3×3 Multi-Blind | 3 of 4 cubes · 27:41 | — | early days — 1 solve | 102 / 128 |
Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.
The line so far
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 11 Oct 2025First sub-15 3×3: 11.17 at Kanto Autumn AM 2025.
- 12 Apr 2025First competition: Tokai Spring 2025. A 16.63 3×3 single to start from.
Competitions
- Ota BLD Autumn 2025 · 8 Nov 2025
- Kanto Autumn AM 2025 · 11 Oct 2025 — 1 personal best set
- Tokai Spring 2025 · 12 Apr 2025
Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.
The circuit
The people whose scorecards keep turning up next to his.
- Takuma Shirahase (白波瀬拓磨) — met in 5 rounds, never finished ahead
- Kanako Eguchi (江口佳奈子) — met in 5 rounds, never finished ahead
- Akatsuki Kitamura (北村曉) — met in 4 rounds, finished ahead 3 times
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 1.17 away.
- A sub-6 Skewb single — 18,841 people have one; it is 0.87 away.
Targets move as he improves.