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The Middle Three
People → Republic of Korea → Sangjin Na (나상진)

People · Republic of Korea

Sangjin Na (나상진)

3×3 · top 44.2% of 284,439 all-time · competing since November 2023 · 2023NASA01

Sangjin Na (나상진) has been competing for 3 years. His best event is the 3×3: a personal-best single of 21.53, set at Seoul Summer 2026, puts him in the top 44.2% of the 284,439 people who have ever been ranked in the event, and 2,267th in Republic of Korea. Across 28 competitions since November 2023, he has put 344 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 16% around a typical one; 90% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 41.39 in November 2023 to 21.53, a 48% improvement. Sangjin has entered 28 competitions, more competitions than 98% of everyone who has ever competed.

3×3
best event — top 44.2% of 284,439 all-time
21.53
signature single · Seoul Summer 2026
344
official solves on the record
16%
solve-to-solve spread · wider than 90% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
3×321.5326.48
top 44.2%2,267 / 4,352
2×25.698.17
top 47.5%1,349 / 2,319
Pyraminx10.0417.10
top 53.3%760 / 1,271
3×3 Fewest Moves43 moves55.00
top 59.0%117 / 173
Clock18.0720.30
top 59.0%381 / 536
4×41:39.152:01.51
top 70.0%1,056 / 1,308
Skewb14.1317.79
top 75.2%682 / 854
3×3 one-handed56.282:13.45
top 81.6%860 / 966
5×53:12.855:10.04
top 82.1%619 / 716
Square-159.111:45.71
top 83.1%328 / 371
Megaminx3:55.495:04.49
top 89.2%484 / 524
6×67:37.387:47.64
early days — 3 solves327 / 329

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

Hamchang Open 2023: 41.39Seoul Open 2024: 39.88Prime Cubing Day Seoul 2024: 33.68Korea Qualifier - Seoul A 2024: 34.15Ansan Summer 2024: 33.62Korean Championship 2024: 31.34Brown Fall Seongnam 2024: 29.59Seoul Winter 2024: 27.40Anyang Haseyo 2025: 26.45Korea Newcomers AM 2025: 30.06Korea Open 2025: 23.98Uhseo Osong 2025: 25.58Seoul Winter 2026: 26.93Ansan Favorites 2026: 26.16Cube Camp in Jeju 2026: 23.68Seoul Spring 2026: 24.54Anyang Haseyo 2026: 23.13Hamoye Jinju 2026: 27.43Uhseo Osong 2026: 24.76Seoul Summer 2026: 21.53Korea Open 2026: 22.5621.5341.3918 Nov 202315 Aug 2026

Best single per competition, 3×3. Faster is higher — the axis is the right way up.

The story so far

Competitions

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.

Next targets

  • A sub-20 3×3 single — 113,584 people have one; it is 1.53 away.
  • A sub-5 2×2 single — 73,413 people have one; it is 0.69 away.

Targets move as he improves.