People · Republic of Korea
YeJun Jeong (정예준)
3×3 · top 3.6% of 288,433 all-time · competing since September 2023 · 2023JEON11
YeJun Jeong (정예준) has been competing for 3 years. His best event is the 3×3: a personal-best single of 8.44, set at Hamoye Jinju 2026, puts him in the top 3.6% of the 288,433 people who have ever been ranked in the event, and 221st in Republic of Korea. Until July 2008, no official 3×3 solve in the world had been that fast. Across 6 competitions since September 2023, he has put 174 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 11% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 12.55 in February 2024 to 8.44, a 33% improvement. YeJun has entered six competitions, more competitions than 86% 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 | 8.44 | 10.39 | top 3.6% | 221 / 4,390 | |
| Pyraminx | 3.99 | 5.40 | top 7.6% | 125 / 1,294 | |
| 6×6 | 1:52.86 | 1:59.11 | top 8.4% | 44 / 335 | |
| 4×4 | 37.45 | 41.64 | top 9.3% | 182 / 1,316 | |
| 5×5 | 1:08.84 | 1:15.48 | top 10.9% | 118 / 725 | |
| Clock | 10.54 | 11.46 | top 27.6% | 188 / 541 | |
| 3×3 one-handed | 23.43 | 31.99 | top 30.0% | 396 / 981 | |
| Skewb | 6.76 | 9.71 | top 31.8% | 327 / 874 | |
| 2×2 | 4.90 | 5.16 | top 38.1% | 1,128 / 2,334 | |
| Square-1 | 25.44 | 30.61 | top 40.1% | 189 / 383 | |
| 7×7 | 4:30.24 | 4:36.06 | early days — 3 solves | 134 / 256 | |
| Megaminx | 1:59.68 | 2:10.47 | top 45.6% | 292 / 526 | |
| 3×3 blindfolded | 2:45.09 | — | early days — 3 solves | 120 / 222 |
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
- 16 May 2026First sub-10 3×3: 8.44 at Hamoye Jinju 2026.
- 16 May 2026Four personal bests in one day at Hamoye Jinju 2026.
- 6 Apr 2024Three personal bests in one day at Busan Spring 2024.
- 3 Feb 2024Three personal bests in one day at Daegu Cold Winter 2024.
- 24 Sep 2023First competition: Ansan Autumn 2023.
Competitions
- Hamoye Jinju 2026 · 16 May 2026 — 4 personal bests set
- We Laugh Pohanghang 2025 · 14 Sep 2025 — 2 personal bests set
- Happy Suseong 2025 · 18 Jan 2025 — 2 personal bests set
- Busan Spring 2024 · 6 Apr 2024 — 3 personal bests set
- Daegu Cold Winter 2024 · 3 Feb 2024 — 3 personal bests set
- Ansan Autumn 2023 · 24 Sep 2023
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.
- Ko Youngjin (고영진) — met in 38 rounds, finished ahead 10 times
- Seung Hyuk Nahm (남승혁) — met in 36 rounds, finished ahead 4 times
- Choi Goho (최고호) — met in 34 rounds, finished ahead 19 times
Next targets
- A sub-8 3×3 single — 8,101 people have one; it is 0.44 away.
- A sub-3 Pyraminx single — 4,783 people have one; it is 0.99 away.
Targets move as he improves.