Head to head
Nico Harper (李有為) vs Jack Pfeifer
Two careers, 74 shared rounds, one running count. Everything below comes from the official results the two of them posted in the same rounds of the same competitions.
Nico Harper (李有為) (United States) and Jack Pfeifer (United States) have met in 74 rounds across 5 competitions since 2018. Counting every round where both finished with a result, Jack Pfeifer leads Nico Harper (李有為): 56 finishes in front to 18.
On personal bests the split is just as plain: across 16 shared events, Jack Pfeifer holds the faster single in 14, Nico Harper (李有為) in 2.
Personal bests, side by side
faster single in bold| Event | Nico Harper (李有為) single | average | Jack Pfeifer single | average |
|---|---|---|---|---|
| 3×3 | 6.02 | 7.77 | 4.84 | 6.15 |
| 2×2 | 1.39 | 2.30 | 0.63 | 1.48 |
| 4×4 | 26.11 | 30.62 | 21.17 | 24.50 |
| 5×5 | 48.98 | 55.70 | 38.13 | 42.47 |
| 6×6 | 1:38.44 | 1:51.31 | 1:08.61 | 1:12.44 |
| 7×7 | 2:37.39 | 2:46.44 | 1:41.75 | 1:46.70 |
| 3×3 blindfolded | 1:15.09 | — | 29.52 | 37.46 |
| 3×3 Fewest Moves | 28 moves | 37.67 | 23 moves | 27.00 |
| 3×3 one-handed | 10.78 | 12.86 | 8.10 | 9.97 |
| Clock | 5.11 | 6.42 | 4.81 | 6.20 |
| Megaminx | 28.65 | 34.89 | 36.72 | 41.15 |
| Pyraminx | 2.38 | 3.65 | 1.59 | 2.66 |
| Skewb | 2.47 | 4.69 | 1.52 | 2.92 |
| Square-1 | 4.73 | 8.32 | 5.16 | 7.61 |
| 4×4 blindfolded | 12:42.00 | — | 6:47.82 | 7:57.64 |
| 3×3 Multi-Blind | 6 of 7 cubes · 28:07 | — | 8 of 9 cubes · 52:39 | — |
Year by year
every meeting, 74 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Nico Harper (李有為) | Jack Pfeifer | ahead |
|---|---|---|---|---|---|---|
| 2025 | Rubik's WCA World Championship 2025 | 2×2 | First round | 4.00 | 2.13 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 | First round | 8.34 | 7.52 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 | Second round | 8.44 | 7.02 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 blindfolded | First round | — | 1:02.94 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 one-handed | First round | 15.39 | 13.07 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 4×4 | First round | 30.69 | 27.12 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 5×5 | First round | 59.36 | 47.32 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 6×6 | First round | — | 1:21.82 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 7×7 | First round | 2:54.51 | 2:01.13 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | 7×7 | Second round | 2:57.30 | 2:05.70 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | Clock | First round | 9.12 | 7.07 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | Megaminx | First round | 37.20 | 45.73 | Nico Harper (李有為) |
| 2025 | Rubik's WCA World Championship 2025 | Pyraminx | First round | 7.18 | 3.76 | Jack Pfeifer |
| 2025 | Rubik's WCA World Championship 2025 | Skewb | First round | 6.57 | 4.08 | Jack Pfeifer |
Full careers: Nico Harper (李有為) · Jack Pfeifer. A meeting is a round of one event at one competition where both finished with a counted result. Who finished ahead follows official placing in the round: rounds played to an average are won on the average, best-of rounds on the single.