Head to head
Mattheo de Wit vs Simon Kellum
Two careers, 69 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.
Mattheo de Wit (Netherlands) and Simon Kellum (United States) have met in 69 rounds across 6 competitions since 2019. Counting every round where both finished with a result, Mattheo de Wit leads Simon Kellum: 43 finishes in front to 26.
On personal bests the split is just as plain: across 17 shared events, Mattheo de Wit holds the faster single in 10, Simon Kellum in 7.
Personal bests, side by side
faster single in bold| Event | Mattheo de Wit single | average | Simon Kellum single | average |
|---|---|---|---|---|
| 3×3 | 5.65 | 7.35 | 4.91 | 7.06 |
| 2×2 | 0.84 | 1.50 | 0.71 | 1.44 |
| 4×4 | 27.05 | 30.19 | 29.24 | 35.27 |
| 5×5 | 53.70 | 57.00 | 55.69 | 1:04.66 |
| 6×6 | 1:37.36 | 1:51.54 | 1:53.03 | 2:06.17 |
| 7×7 | 2:43.98 | 2:57.54 | 2:57.72 | 3:15.06 |
| 3×3 blindfolded | 20.06 | 24.99 | 39.08 | 1:02.97 |
| 3×3 Fewest Moves | 20 moves | 23.33 | 19 moves | 20.67 |
| 3×3 one-handed | 10.39 | 13.75 | 8.49 | 11.90 |
| Clock | 3.62 | 4.69 | 4.00 | 4.88 |
| Megaminx | 35.48 | 39.80 | 39.37 | 45.94 |
| Pyraminx | 1.61 | 3.03 | 0.73 | 1.53 |
| Skewb | 1.10 | 2.10 | 0.85 | 1.71 |
| Square-1 | 7.24 | 9.92 | 6.65 | 10.13 |
| 4×4 blindfolded | 3:20.95 | 4:06.33 | 7:34.34 | — |
| 5×5 blindfolded | 8:18.11 | — | 19:52.00 | — |
| 3×3 Multi-Blind | 36 of 39 cubes · 59:19 | — | 10 of 12 cubes · 56:45 | — |
Year by year
every meeting, 69 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Mattheo de Wit | Simon Kellum | ahead |
|---|---|---|---|---|---|---|
| 2026 | FMC World 2026 | 3×3 Fewest Moves | Final | 26.00 | 21.67 | Simon Kellum |
| 2025 | Rubik's WCA World Championship 2025 | 2×2 | First round | 2.29 | 2.95 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 | First round | 7.88 | 9.81 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 blindfolded | First round | 33.21 | — | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 one-handed | First round | 16.11 | 13.76 | Simon Kellum |
| 2025 | Rubik's WCA World Championship 2025 | 4×4 | First round | 32.90 | 37.70 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | 4×4 blindfolded | Final | 4:37.08 | — | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | 5×5 | First round | 1:03.84 | 1:09.99 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | 6×6 | First round | 1:59.79 | 2:12.40 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | 7×7 | First round | 3:03.59 | 3:32.85 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | Clock | First round | 5.56 | 7.80 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | Megaminx | First round | 44.37 | 53.49 | Mattheo de Wit |
| 2025 | Rubik's WCA World Championship 2025 | Pyraminx | First round | 4.22 | 2.14 | Simon Kellum |
| 2025 | Rubik's WCA World Championship 2025 | Skewb | Second round | 2.11 | 4.07 | Mattheo de Wit |
Full careers: Mattheo de Wit · Simon Kellum. 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.