Head to head
Tomohiro Kobayashi (小林知広) vs Kai Yamamoto (山本快)
Two careers, 70 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.
Tomohiro Kobayashi (小林知広) (Japan) and Kai Yamamoto (山本快) (Japan) have met in 70 rounds across 21 competitions since 2021. Counting every round where both finished with a result, Tomohiro Kobayashi (小林知広) leads Kai Yamamoto (山本快): 43 finishes in front to 27.
On personal bests the split is just as plain: across 17 shared events, Tomohiro Kobayashi (小林知広) holds the faster single in 9, Kai Yamamoto (山本快) in 7.
Personal bests, side by side
faster single in bold| Event | Tomohiro Kobayashi (小林知広) single | average | Kai Yamamoto (山本快) single | average |
|---|---|---|---|---|
| 3×3 | 7.45 | 8.64 | 8.62 | 9.77 |
| 2×2 | 1.41 | 2.33 | 1.97 | 2.55 |
| 4×4 | 25.61 | 30.94 | 29.77 | 36.27 |
| 5×5 | 47.27 | 52.61 | 58.58 | 1:07.32 |
| 6×6 | 1:26.26 | 1:31.38 | 1:54.49 | 2:02.59 |
| 7×7 | 2:11.01 | 2:16.05 | 3:12.76 | 3:20.42 |
| 3×3 blindfolded | 41.01 | 49.02 | 41.28 | 59.65 |
| 3×3 Fewest Moves | 19 moves | 23.00 | 19 moves | 21.33 |
| 3×3 one-handed | 12.59 | 16.18 | 10.70 | 13.25 |
| Clock | 6.46 | 8.27 | 3.80 | 5.04 |
| Megaminx | 42.57 | 46.67 | 51.47 | 54.07 |
| Pyraminx | 2.95 | 4.18 | 2.28 | 5.06 |
| Skewb | 2.89 | 4.80 | 3.63 | 6.65 |
| Square-1 | 13.25 | 18.35 | 11.35 | 16.33 |
| 4×4 blindfolded | 8:27.91 | — | 4:21.22 | 5:17.37 |
| 5×5 blindfolded | 31:02.00 | — | 10:26.00 | — |
| 3×3 Multi-Blind | 10 of 13 cubes · 57:22 | — | 14 of 14 cubes · 51:40 | — |
Year by year
every meeting, 70 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Tomohiro Kobayashi (小林知広) | Kai Yamamoto (山本快) | ahead |
|---|---|---|---|---|---|---|
| 2026 | Japan Championship 2026 | 2×2 | First round | 3.47 | 2.55 | Kai Yamamoto (山本快) |
| 2026 | Japan Championship 2026 | 3×3 | First round | 10.36 | 10.38 | Tomohiro Kobayashi (小林知広) |
| 2026 | Japan Championship 2026 | 4×4 | First round | 32.68 | 39.30 | Tomohiro Kobayashi (小林知広) |
| 2026 | Japan Championship 2026 | 5×5 | First round | 53.86 | 1:07.32 | Tomohiro Kobayashi (小林知広) |
| 2026 | Japan Championship 2026 | 6×6 | Final | 1:35.95 | 2:08.75 | Tomohiro Kobayashi (小林知広) |
| 2026 | Japan Championship 2026 | 7×7 | Final | 2:19.82 | 3:25.71 | Tomohiro Kobayashi (小林知広) |
| 2026 | Japan Championship 2026 | Megaminx | First round | 53.45 | 54.07 | Tomohiro Kobayashi (小林知広) |
| 2026 | FMC World 2026 | 3×3 Fewest Moves | Final | 23.00 | 21.33 | Kai Yamamoto (山本快) |
| 2026 | Tokyo Summer 2026 | 6×6 | First round | 1:46.44 | 2:05.14 | Tomohiro Kobayashi (小林知広) |
| 2026 | Tokyo Summer 2026 | 7×7 | First round | 2:20.39 | 3:20.42 | Tomohiro Kobayashi (小林知広) |
| 2026 | Tokyo Summer 2026 | Clock | First round | 11.25 | 5.39 | Kai Yamamoto (山本快) |
| 2026 | Kansai BLD Summer 2026 | 3×3 blindfolded | First round | 48.18 | 1:06.72 | Kai Yamamoto (山本快) |
| 2026 | Kansai BLD Summer 2026 | 3×3 blindfolded | Final | 44.17 | 45.53 | Tomohiro Kobayashi (小林知広) |
| 2026 | Kansai BLD Summer 2026 | 4×4 | Final | 33.69 | 39.80 | Tomohiro Kobayashi (小林知広) |
Full careers: Tomohiro Kobayashi (小林知広) · Kai Yamamoto (山本快). 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.