People · Republic of Korea
Jonghyeon Seo (서종현)
3×3 · top 23.3% of 288,433 all-time · competing since March 2026 · 2026SEOJ02
Jonghyeon Seo (서종현) has been competing for 7 months. His best event is the 3×3: a personal-best single of 14.63, set at Temecula Valley Back To School 2026, puts him in the top 23.3% of the 288,433 people who have ever been ranked in the event, and 1,255th in Republic of Korea. Across 4 competitions since March 2026, he has put 50 official solves on the record across three events. Solve to solve, his 3×3 times vary about 17% around a typical one, an early reading from 7 counted rounds. His 3×3 best has come down from 17.52 in March 2026 to 14.63, a 16% improvement. Jonghyeon 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 | Republic of Korea | |
|---|---|---|---|---|---|
| 3×3 | 14.63 | 16.85 | top 23.3% | 1,255 / 4,390 | |
| 2×2 | 4.88 | 7.15 | top 37.8% | 1,116 / 2,334 | |
| Clock | 17.93 | 19.95 | top 58.5% | 386 / 541 |
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
- 25 Jul 2026First sub-15 3×3: 14.87 at Temecula Valley Summer 2026.
- 22 Mar 2026First competition: Seoul Spring 2026. A 17.52 3×3 single to start from.
Competitions
- Tacoma Fall 2026 · 10 Oct 2026 — 2 personal bests set
- Temecula Valley Back To School 2026 · 22 Aug 2026 — 1 personal best set
- Temecula Valley Summer 2026 · 25 Jul 2026 — 2 personal bests set
- Seoul Spring 2026 · 22 Mar 2026
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.
- Jacob ODonnell — met in 5 rounds, finished ahead 5 times
- Abigail Garness — met in 5 rounds, finished ahead 5 times
- Ruogu Zhang (张若谷) — met in 5 rounds, finished ahead 5 times
Next targets
- A sub-12 3×3 single — 40,277 people have one; it is 2.63 away.
- A sub-4 2×2 single — 50,215 people have one; it is 0.88 away.
Targets move as he improves.