Head to head
Simon Kellum vs Matias Marcantoni-Nunez
Two careers, 65 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 Matias Marcantoni-Nunez (United States) have met in 65 rounds across 5 competitions since 2023. Counting every round where both finished with a result, Simon Kellum leads Matias Marcantoni-Nunez: 41 finishes in front to 24.
On personal bests the split is just as plain: across 9 shared events, Simon Kellum holds the faster single in 6, Matias Marcantoni-Nunez in 3.
Personal bests, side by side
faster single in bold| Event | Simon Kellum single | average | Matias Marcantoni-Nunez single | average |
|---|---|---|---|---|
| 3×3 | 4.91 | 7.06 | 4.72 | 5.99 |
| 2×2 | 0.71 | 1.44 | 0.72 | 1.02 |
| 4×4 | 29.24 | 35.27 | 47.52 | 53.38 |
| 3×3 one-handed | 8.49 | 11.90 | 11.28 | 15.11 |
| Clock | 4.00 | 4.88 | 3.54 | 4.52 |
| Megaminx | 39.37 | 45.94 | 1:28.72 | 1:40.66 |
| Pyraminx | 0.73 | 1.53 | 0.96 | 2.65 |
| Skewb | 0.85 | 1.71 | 1.63 | 2.43 |
| Square-1 | 6.65 | 10.13 | 6.60 | 8.87 |
Year by year
every meeting, 65 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Simon Kellum | Matias Marcantoni-Nunez | ahead |
|---|---|---|---|---|---|---|
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | First round | 2.36 | 1.57 | Matias Marcantoni-Nunez |
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | Second round | 2.65 | 1.17 | Matias Marcantoni-Nunez |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | Second round | 7.60 | 7.32 | Matias Marcantoni-Nunez |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | First round | 8.63 | 6.30 | Matias Marcantoni-Nunez |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | First round | 12.94 | 16.91 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Clock | First round | 6.01 | 6.52 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Pyraminx | First round | 2.10 | 3.17 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Pyraminx | Second round | 2.14 | 4.08 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | First round | 2.89 | 2.87 | Matias Marcantoni-Nunez |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | Final | 3.09 | 3.03 | Matias Marcantoni-Nunez |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | Second round | 2.62 | 2.67 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Square-1 | First round | 12.82 | 10.13 | Matias Marcantoni-Nunez |
| 2025 | Rubik's WCA World Championship 2025 | 2×2 | First round | 2.95 | 1.34 | Simon Kellum |
| 2025 | Rubik's WCA World Championship 2025 | 3×3 | First round | 9.81 | 6.67 | Matias Marcantoni-Nunez |
Full careers: Simon Kellum · Matias Marcantoni-Nunez. 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.