Head to head
Mason Langenderfer vs Declan Mangan-Lamb
Two careers, 77 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.
Mason Langenderfer (United States) and Declan Mangan-Lamb (Ireland) have met in 77 rounds across 7 competitions since 2023. Counting every round where both finished with a result, Mason Langenderfer leads Declan Mangan-Lamb: 56 finishes in front to 21.
On personal bests the split is just as plain: across 15 shared events, Mason Langenderfer holds the faster single in 11, Declan Mangan-Lamb in 4.
Personal bests, side by side
faster single in bold| Event | Mason Langenderfer single | average | Declan Mangan-Lamb single | average |
|---|---|---|---|---|
| 3×3 | 6.34 | 8.32 | 7.31 | 8.96 |
| 2×2 | 0.85 | 2.05 | 0.91 | 2.33 |
| 4×4 | 28.90 | 32.31 | 33.50 | 37.92 |
| 5×5 | 57.54 | 1:05.85 | 1:07.78 | 1:13.18 |
| 6×6 | 1:55.39 | 2:05.68 | 2:19.34 | 2:35.94 |
| 7×7 | 3:10.51 | 3:19.13 | 4:04.72 | 4:21.61 |
| 3×3 blindfolded | 17.30 | 24.69 | 1:33.32 | — |
| 3×3 Fewest Moves | 23 moves | 29.67 | 29 moves | 37.00 |
| 3×3 one-handed | 8.35 | 11.64 | 15.91 | 21.94 |
| Clock | 5.65 | 6.83 | 5.39 | 6.60 |
| Megaminx | 49.63 | 55.35 | 45.50 | 51.90 |
| Pyraminx | 2.30 | 3.40 | 1.91 | 3.69 |
| Skewb | 1.08 | 2.62 | 0.95 | 2.21 |
| Square-1 | 9.64 | 14.13 | 16.96 | 23.50 |
| 3×3 Multi-Blind | 28 of 31 cubes · 52:02 | — | 3 of 4 cubes · 24:03 | — |
Year by year
every meeting, 77 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Mason Langenderfer | Declan Mangan-Lamb | ahead |
|---|---|---|---|---|---|---|
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | First round | 3.43 | 3.38 | Declan Mangan-Lamb |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | Second round | 9.30 | 10.11 | Mason Langenderfer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | First round | 9.73 | 10.06 | Mason Langenderfer |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | First round | 14.44 | 23.50 | Mason Langenderfer |
| 2026 | Rubik's WCA North American Championship 2026 | 4×4 | First round | 36.69 | 41.09 | Mason Langenderfer |
| 2026 | Rubik's WCA North American Championship 2026 | Pyraminx | First round | 7.94 | 5.22 | Declan Mangan-Lamb |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | Second round | 3.71 | 2.21 | Declan Mangan-Lamb |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | First round | 4.60 | 2.88 | Declan Mangan-Lamb |
| 2025 | CubingUSA Great Lakes Championship 2025 | 2×2 | First round | 2.75 | 4.40 | Mason Langenderfer |
| 2025 | CubingUSA Great Lakes Championship 2025 | 2×2 | Second round | 3.04 | 4.30 | Mason Langenderfer |
| 2025 | CubingUSA Great Lakes Championship 2025 | 3×3 | First round | 9.77 | 10.58 | Mason Langenderfer |
| 2025 | CubingUSA Great Lakes Championship 2025 | 3×3 | Second round | 9.82 | 12.22 | Mason Langenderfer |
| 2025 | CubingUSA Great Lakes Championship 2025 | 3×3 blindfolded | First round | 20.76 | 1:58.43 | Mason Langenderfer |
| 2025 | CubingUSA Great Lakes Championship 2025 | 3×3 one-handed | Second round | 13.85 | 25.94 | Mason Langenderfer |
Full careers: Mason Langenderfer · Declan Mangan-Lamb. 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.