Head to head
Simon Kellum vs Alexei Sinyavin
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.
Simon Kellum (United States) and Alexei Sinyavin (United States) have met in 74 rounds across 9 competitions since 2019. Counting every round where both finished with a result, Alexei Sinyavin leads Simon Kellum: 44 finishes in front to 29 and 1 tie.
On personal bests the split is just as plain: across 16 shared events, Simon Kellum holds the faster single in 10, Alexei Sinyavin in 5.
Personal bests, side by side
faster single in bold| Event | Simon Kellum single | average | Alexei Sinyavin single | average |
|---|---|---|---|---|
| 3×3 | 4.91 | 7.06 | 5.61 | 7.00 |
| 2×2 | 0.71 | 1.44 | 1.14 | 1.86 |
| 4×4 | 29.24 | 35.27 | 22.12 | 25.11 |
| 5×5 | 55.69 | 1:04.66 | 41.32 | 46.51 |
| 6×6 | 1:53.03 | 2:06.17 | 1:15.66 | 1:20.66 |
| 7×7 | 2:57.72 | 3:15.06 | 2:03.71 | 2:13.89 |
| 3×3 blindfolded | 39.08 | 1:02.97 | 1:15.03 | — |
| 3×3 Fewest Moves | 19 moves | 20.67 | 19 moves | 22.00 |
| 3×3 one-handed | 8.49 | 11.90 | 11.33 | 13.67 |
| Clock | 4.00 | 4.88 | 5.78 | 6.96 |
| Megaminx | 39.37 | 45.94 | 24.60 | 27.92 |
| Pyraminx | 0.73 | 1.53 | 3.47 | 5.15 |
| Skewb | 0.85 | 1.71 | 1.57 | 4.29 |
| Square-1 | 6.65 | 10.13 | 7.02 | 10.21 |
| 4×4 blindfolded | 7:34.34 | — | 18:55.00 | — |
| 3×3 Multi-Blind | 10 of 12 cubes · 56:45 | — | 4 of 6 cubes · 46:30 | — |
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 | Simon Kellum | Alexei Sinyavin | ahead |
|---|---|---|---|---|---|---|
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | First round | 2.36 | 2.92 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | Second round | 7.60 | 8.72 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | First round | 8.63 | 7.62 | Alexei Sinyavin |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 Fewest Moves | Final | 23 moves | 23 moves | tie |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | First round | 12.94 | 15.73 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | 4×4 | First round | 36.71 | 28.38 | Alexei Sinyavin |
| 2026 | Rubik's WCA North American Championship 2026 | 5×5 | First round | 1:10.10 | 50.93 | Alexei Sinyavin |
| 2026 | Rubik's WCA North American Championship 2026 | Megaminx | First round | 55.39 | 31.05 | Alexei Sinyavin |
| 2026 | Rubik's WCA North American Championship 2026 | Pyraminx | First round | 2.10 | 6.19 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | First round | 2.89 | 9.59 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Square-1 | First round | 12.82 | 13.91 | Simon Kellum |
| 2026 | For the Love of FMC USA 2026 | 3×3 Fewest Moves | Final | 24.00 | 24.67 | Simon Kellum |
| 2025 | Rubik's x TheCubicle CubingUSA All-Stars 2025 | 3×3 Fewest Moves | Final | 26 moves | 24.67 | Alexei Sinyavin |
| 2025 | Rubik's WCA World Championship 2025 | 2×2 | First round | 2.95 | 2.98 | Simon Kellum |
Full careers: Simon Kellum · Alexei Sinyavin. 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.