Head to head
Jeffrey Li vs Jack Pfeifer
Two careers, 45 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.
Jeffrey Li (United States) and Jack Pfeifer (United States) have met in 45 rounds across 4 competitions since 2024. Counting every round where both finished with a result, Jack Pfeifer leads Jeffrey Li: 43 finishes in front to 2.
On personal bests the split is just as plain: across 13 shared events, Jack Pfeifer holds the faster single in 13, Jeffrey Li in 0.
Personal bests, side by side
faster single in bold| Event | Jeffrey Li single | average | Jack Pfeifer single | average |
|---|---|---|---|---|
| 3×3 | 5.91 | 7.69 | 4.84 | 6.15 |
| 2×2 | 0.91 | 1.89 | 0.63 | 1.48 |
| 4×4 | 22.45 | 27.03 | 21.17 | 24.50 |
| 5×5 | 44.17 | 50.25 | 38.13 | 42.47 |
| 6×6 | 1:13.86 | 1:24.09 | 1:08.61 | 1:12.44 |
| 7×7 | 1:52.46 | 1:57.26 | 1:41.75 | 1:46.70 |
| 3×3 Fewest Moves | 38 moves | 39.00 | 23 moves | 27.00 |
| 3×3 one-handed | 10.70 | 13.74 | 8.10 | 9.97 |
| Clock | 6.85 | 7.46 | 4.81 | 6.20 |
| Megaminx | 40.03 | 43.44 | 36.72 | 41.15 |
| Pyraminx | 2.63 | 3.58 | 1.59 | 2.66 |
| Skewb | 3.62 | 4.38 | 1.52 | 2.92 |
| Square-1 | 8.07 | 9.68 | 5.16 | 7.61 |
Year by year
every meeting, 45 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Jeffrey Li | Jack Pfeifer | ahead |
|---|---|---|---|---|---|---|
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | First round | 2.43 | 1.97 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | Second round | 2.23 | 1.64 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | Second round | 8.81 | 6.42 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | First round | 8.41 | 7.30 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | Second round | 14.69 | 12.20 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | First round | 14.09 | 12.11 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 4×4 | First round | 29.84 | 26.91 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 4×4 | Second round | 31.79 | 28.37 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 5×5 | First round | 52.98 | 45.28 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 5×5 | Second round | 57.13 | 44.35 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 6×6 | First round | 1:32.67 | 1:20.02 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 7×7 | Final | 2:09.80 | 2:00.55 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 7×7 | First round | 2:12.25 | 1:57.58 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | Megaminx | First round | 47.51 | 43.25 | Jack Pfeifer |
Full careers: Jeffrey Li · 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.