Head to head
Calvin Nielson vs Sameer Aggarwal
Two careers, 305 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.
Calvin Nielson (United States) and Sameer Aggarwal (United States) have met in 305 rounds across 26 competitions since 2017. Counting every round where both finished with a result, Sameer Aggarwal leads Calvin Nielson: 284 finishes in front to 19 and 2 ties.
On personal bests the split is just as plain: across 16 shared events, Sameer Aggarwal holds the faster single in 15, Calvin Nielson in 1.
Personal bests, side by side
faster single in bold| Event | Calvin Nielson single | average | Sameer Aggarwal single | average |
|---|---|---|---|---|
| 3×3 | 7.41 | 9.37 | 4.13 | 5.56 |
| 2×2 | 1.02 | 2.67 | 0.51 | 1.45 |
| 4×4 | 34.64 | 43.51 | 22.60 | 26.19 |
| 5×5 | 1:11.59 | 1:24.03 | 45.21 | 51.08 |
| 6×6 | 2:28.88 | 2:37.29 | 1:24.66 | 1:30.43 |
| 7×7 | 3:58.09 | 4:14.47 | 2:18.99 | 2:30.84 |
| 3×3 blindfolded | 1:23.60 | 3:12.71 | 34.66 | 1:05.63 |
| 3×3 Fewest Moves | 20 moves | 24.33 | 21 moves | 28.67 |
| 3×3 one-handed | 12.92 | 17.81 | 7.76 | 10.82 |
| Clock | 4.75 | 6.40 | 2.99 | 4.34 |
| Megaminx | 1:02.11 | 1:09.66 | 39.74 | 46.64 |
| Pyraminx | 2.97 | 5.38 | 1.35 | 2.35 |
| Skewb | 2.54 | 4.71 | 1.46 | 3.34 |
| Square-1 | 4.66 | 6.58 | 3.42 | 4.63 |
| 4×4 blindfolded | 13:19.00 | — | 6:19.74 | 8:58.25 |
| 3×3 Multi-Blind | 2 of 2 cubes · 9:12 | — | 8 of 8 cubes · 55:57 | — |
Year by year
every meeting, 305 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Calvin Nielson | Sameer Aggarwal | ahead |
|---|---|---|---|---|---|---|
| 2025 | Oregon Championship 2025 | Square-1 | First round | 8.29 | 6.41 | Sameer Aggarwal |
| 2025 | Oregon Championship 2025 | Square-1 | Final | 8.50 | 5.08 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 2×2 | Second round | 3.78 | 1.82 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 2×2 | First round | 3.54 | 1.99 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 3×3 | First round | 10.95 | 7.41 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 3×3 | Second round | 12.20 | 7.60 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 3×3 one-handed | First round | 19.84 | 11.94 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 4×4 | First round | 48.31 | 27.52 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 5×5 | First round | 1:27.92 | 1:00.71 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | 6×6 | First round | 2:53.38 | 1:42.85 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | Clock | First round | 8.50 | 6.90 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | Megaminx | First round | 1:19.97 | 47.48 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | Pyraminx | First round | 6.96 | 2.67 | Sameer Aggarwal |
| 2024 | Rubik's WCA North American Championship 2024 | Skewb | First round | 7.14 | 6.50 | Sameer Aggarwal |
Full careers: Calvin Nielson · Sameer Aggarwal. 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.