People · Republic of Korea
Sejin Park
3×3 · top 35.7% of 284,439 all-time · competing since August 2025 · 2025PARK57
Sejin Park has been competing for a year. His best event is the 3×3: a personal-best single of 18.53, set at Seoul Summer 2026, puts him in the top 35.7% of the 284,439 people who have ever been ranked in the event, and 1,875th in Republic of Korea. Across 5 competitions since August 2025, he has put 25 official solves on the record across one event. Solve to solve, his 3×3 times vary about 15% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 24.48 in August 2025 to 18.53, a 24% improvement. Sejin has entered five competitions, more competitions than 83% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Republic of Korea | |
|---|---|---|---|---|---|
| 3×3 | 18.53 | 21.39 | top 35.7% | 1,875 / 4,352 |
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
- 7 Feb 2026First sub-20 3×3: 19.39 at Ansan Favorites 2026.
- 15 Aug 2025First competition: Korea Open 2025. A 24.48 3×3 single to start from.
Competitions
- Seoul Summer 2026 · 19 Jul 2026 — 1 personal best set
- Anyang Haseyo 2026 · 26 Apr 2026
- Seoul Spring 2026 · 22 Mar 2026 — 1 personal best set
- Ansan Favorites 2026 · 7 Feb 2026 — 1 personal best set
- Korea Open 2025 · 15 Aug 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.
- Jaei Kim (김재이) — met in 5 rounds, finished ahead 5 times
- Sangjin Na (나상진) — met in 5 rounds, finished ahead 4 times
- Yul-Hok Sung (성열학) — met in 5 rounds, finished ahead once
Next targets
- A sub-15 3×3 single — 69,493 people have one; it is 3.53 away.
Targets move as he improves.