People · Spain
Sergio Márquez Fernández-Jardón
Clock · top 0.05% of 32,048 all-time · competing since September 2023 · 2023FERN54
Sergio Márquez Fernández-Jardón has been competing for 3 years. His best event is the Clock: a personal-best single of 1.99, set at Cervantes Cubea Alcalá 2026, puts him in the top 0.05% of the 32,048 people who have ever been ranked in the event, and 1st in Spain. Until August 2024, no official Clock solve in the world had been that fast. Across 17 competitions since September 2023, he has put 1,036 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 57% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 17.60 in September 2023 to 6.17, a 65% improvement. Sergio has entered 17 competitions, more competitions than 96% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Spain | |
|---|---|---|---|---|---|
| Clock | 1.99 | 2.85 | top 0.05% | 1 / 876 | |
| 2×2 | 0.79 | 1.52 | top 0.22% | 11 / 3,845 | |
| 3×3 | 6.17 | 7.80 | top 0.59% | 25 / 5,141 | |
| Pyraminx | 2.03 | 3.26 | top 1.2% | 41 / 2,865 | |
| Skewb | 2.07 | 3.83 | top 1.6% | 74 / 1,685 | |
| Square-1 | 9.04 | 12.78 | top 4.5% | 26 / 604 | |
| 4×4 | 34.94 | 40.45 | top 6.6% | 90 / 1,762 | |
| 3×3 one-handed | 15.65 | 17.54 | top 9.5% | 102 / 1,315 | |
| Megaminx | 1:04.90 | 1:10.91 | top 12.6% | 88 / 874 | |
| 5×5 | 1:22.53 | 1:30.42 | top 21.2% | 133 / 863 |
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 2025Seven personal bests in one day at Spanish Championship 2025.
- 13 Sep 2025Four personal bests in one day at León Open 2025.
- 19 Jul 2025Three personal bests in one day at Vigo Open 2025.
- 28 Jun 2025Five personal bests in one day at Parla Open 2025.
- 5 Apr 2025Five personal bests in one day at Ruta Cubera: Camino de Santiago Open 2025.
- 15 Feb 2025Seven personal bests in one day at Amore Amorebieta Open 2025.
Competitions
- Vigo Open 2026 · 11 Jul 2026
- Camino de Santiago Open 2026 · 9 May 2026 — 1 personal best set
- Cervantes Cubea Alcalá 2026 · 28 Mar 2026 — 1 personal best set
- Ruta Cubera: Lalín Open 2026 · 28 Feb 2026 — 1 personal best set
- Lugo Open 2026 · 3 Jan 2026 — 1 personal best set
- Spanish Championship 2025 · 6 Dec 2025 — 7 personal bests set
- León Open 2025 · 13 Sep 2025 — 4 personal bests set
- Vigo Open 2025 · 19 Jul 2025 — 3 personal bests set
- CCM Baltar Open 2025 · 12 Jul 2025 — 1 personal best set
- Parla Open 2025 · 28 Jun 2025 — 5 personal bests set
- Ruta Cubera: Camino de Santiago Open 2025 · 5 Apr 2025 — 5 personal bests set
- Amore Amorebieta Open 2025 · 15 Feb 2025 — 7 personal bests set
- Mirasierra Open 2024 · 16 Nov 2024 — 4 personal bests set
- Portugal Championship 2024 · 30 Aug 2024 — 12 personal bests set
- Vigo Open 2024 · 29 Jun 2024 — 3 personal bests set
- X-Madrid Open 2024 · 25 May 2024 — 4 personal bests set
- NxN Tormes Open 2023 · 23 Sep 2023 — 1 personal best set
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.
- Daniel Cabezudo Fernández — met in 138 rounds, finished ahead 109 times · head to head
- Teo Cabezudo Fernández — met in 113 rounds, finished ahead 110 times · head to head
- Brais Suárez — met in 110 rounds, finished ahead 108 times · head to head
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 0.17 away.
Targets move as he improves.