People · Japan
Koki Matsubara (松原功樹)
3×3 · top 11.3% of 284,439 all-time · competing since July 2019 · 2019MATS02
Koki Matsubara (松原功樹) has been competing for 7 years. His best event is the 3×3: a personal-best single of 11.27, set at Katano Summer 2025, puts him in the top 11.3% of the 284,439 people who have ever been ranked in the event, and 489th in Japan. Across 4 competitions since July 2019, he has put 35 official solves on the record across two events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 6 counted rounds. His 3×3 best has come down from 19.90 in July 2019 to 11.27, a 43% improvement. Koki has entered four competitions, more competitions than 78% 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 | 11.27 | 14.21 | top 11.3% | 489 / 3,329 | |
| 2×2 | 2.92 | 5.74 | top 13.3% | 182 / 1,021 |
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
- 15 Sep 2025First sub-15 3×3: 11.70 at Katano Summer 2025.
- 20 Jul 2019First competition: Nishinomiya Open 2019. A 19.90 3×3 single to start from.
Competitions
- Katano Summer 2025 · 15 Sep 2025 — 2 personal bests set
- Japan Championship 2019 · 2 Nov 2019 — 1 personal best set
- Kansai Summer 2019 · 1 Sep 2019 — 1 personal best set
- Nishinomiya Open 2019 · 20 Jul 2019
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.
- Kengo Yamawaki (山脇憲吾) — met in 7 rounds, finished ahead 4 times
- Makoto Takaoka (高岡誠) — met in 7 rounds, never finished ahead
- Kohdai Kusatani (草谷幸大) — met in 7 rounds, never finished ahead
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 1.27 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.92 away.
Targets move as he improves.