People · United States
Isaac Xu
Skewb · top 39.4% of 73,281 all-time · competing since January 2023 · 2023XUIS01
Isaac Xu has been competing for 4 years. His best event is the Skewb: a personal-best single of 7.75, set at Coosa Cubing Clash 2025, puts him in the top 39.4% of the 73,281 people who have ever been ranked in the event, and 6,782nd in the United States. Across 3 competitions since January 2023, he has put 37 official solves on the record across four events. Solve to solve, his 3×3 times vary about 11% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 46.51 in January 2023 to 21.52, a 54% improvement. Isaac has entered three competitions, more competitions than 69% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| Skewb | 7.75 | 12.37 | top 39.4% | 6,782 / 18,907 | |
| 3×3 | 21.52 | 23.35 | top 44.1% | 25,392 / 59,724 | |
| 2×2 | 5.69 | 8.02 | top 47.5% | 19,232 / 40,951 | |
| 4×4 | 2:41.30 | — | early days — 2 solves | 18,009 / 19,072 |
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
- 6 Dec 2025First sub-30 3×3: 22.59 at Coosa Cubing Clash 2025.
- 21 Jan 2023First competition: Music City Speedsolving 2023. A 46.51 3×3 single to start from.
Competitions
- Vanderbilt Winter 2026 · 14 Feb 2026
- Coosa Cubing Clash 2025 · 6 Dec 2025 — 2 personal bests set
- Music City Speedsolving 2023 · 21 Jan 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.
- Jae Swett — met in 8 rounds, finished ahead once
- Drew Windham — met in 8 rounds, finished ahead once
- Katie Hull — met in 8 rounds, never finished ahead
Next targets
- A sub-6 Skewb single — 18,841 people have one; it is 1.75 away.
- A sub-20 3×3 single — 113,584 people have one; it is 1.52 away.
Targets move as he improves.