Head to head
Jack Pfeifer vs Curtis Chai
Two careers, 83 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.
Jack Pfeifer (United States) and Curtis Chai (United States) have met in 83 rounds across 6 competitions since 2023. Counting every round where both finished with a result, Jack Pfeifer leads Curtis Chai: 49 finishes in front to 34.
On personal bests the split is just as plain: across 14 shared events, Jack Pfeifer holds the faster single in 9, Curtis Chai in 5.
Personal bests, side by side
faster single in bold| Event | Jack Pfeifer single | average | Curtis Chai single | average |
|---|---|---|---|---|
| 3×3 | 4.84 | 6.15 | 4.96 | 6.03 |
| 2×2 | 0.63 | 1.48 | 0.70 | 1.11 |
| 4×4 | 21.17 | 24.50 | 20.53 | 24.23 |
| 5×5 | 38.13 | 42.47 | 43.49 | 48.84 |
| 6×6 | 1:08.61 | 1:12.44 | 1:25.96 | 1:34.85 |
| 7×7 | 1:41.75 | 1:46.70 | 2:32.52 | 2:37.52 |
| 3×3 blindfolded | 29.52 | 37.46 | 2:22.31 | — |
| 3×3 Fewest Moves | 23 moves | 27.00 | 36 moves | 39.00 |
| 3×3 one-handed | 8.10 | 9.97 | 10.26 | 12.02 |
| Clock | 4.81 | 6.20 | 2.72 | 3.69 |
| Megaminx | 36.72 | 41.15 | 36.17 | 38.75 |
| Pyraminx | 1.59 | 2.66 | 1.15 | 1.86 |
| Skewb | 1.52 | 2.92 | 1.39 | 2.52 |
| Square-1 | 5.16 | 7.61 | 5.85 | 9.14 |
Year by year
every meeting, 83 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Jack Pfeifer | Curtis Chai | ahead |
|---|---|---|---|---|---|---|
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | Second round | 1.64 | 2.40 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | First round | 1.97 | 1.90 | Curtis Chai |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | First round | 7.30 | 6.04 | Curtis Chai |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | Second round | 6.42 | 7.03 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | Semi Final | 6.77 | 6.90 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | First round | 12.11 | 14.91 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | Second round | 12.20 | 13.69 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 4×4 | First round | 26.91 | 27.56 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 4×4 | Second round | 28.37 | 24.23 | Curtis Chai |
| 2026 | Rubik's WCA North American Championship 2026 | 5×5 | First round | 45.28 | 52.36 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 5×5 | Second round | 44.35 | 49.66 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 6×6 | First round | 1:20.02 | 1:42.26 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | 7×7 | First round | 1:57.58 | 2:52.11 | Jack Pfeifer |
| 2026 | Rubik's WCA North American Championship 2026 | Megaminx | First round | 43.25 | 38.75 | Curtis Chai |
Full careers: Jack Pfeifer · Curtis Chai. 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.