Head to head
Chris Chi vs Simon Kellum
Two careers, 217 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.
Chris Chi (United States) and Simon Kellum (United States) have met in 217 rounds across 20 competitions since 2017. Counting every round where both finished with a result, Simon Kellum leads Chris Chi: 108 finishes in front to 105 and 4 ties.
On personal bests the split is just as plain: across 17 shared events, Chris Chi holds the faster single in 12, Simon Kellum in 5.
Personal bests, side by side
faster single in bold| Event | Chris Chi single | average | Simon Kellum single | average |
|---|---|---|---|---|
| 3×3 | 4.96 | 7.36 | 4.91 | 7.06 |
| 2×2 | 0.65 | 1.26 | 0.71 | 1.44 |
| 4×4 | 26.52 | 31.83 | 29.24 | 35.27 |
| 5×5 | 53.22 | 56.70 | 55.69 | 1:04.66 |
| 6×6 | 1:37.02 | 1:42.74 | 1:53.03 | 2:06.17 |
| 7×7 | 2:44.58 | 2:50.02 | 2:57.72 | 3:15.06 |
| 3×3 blindfolded | 20.40 | 25.75 | 39.08 | 1:02.97 |
| 3×3 Fewest Moves | 18 moves | 20.00 | 19 moves | 20.67 |
| 3×3 one-handed | 10.19 | 13.97 | 8.49 | 11.90 |
| Clock | 3.13 | 5.35 | 4.00 | 4.88 |
| Megaminx | 45.02 | 52.30 | 39.37 | 45.94 |
| Pyraminx | 1.68 | 3.59 | 0.73 | 1.53 |
| Skewb | 1.22 | 2.44 | 0.85 | 1.71 |
| Square-1 | 5.05 | 7.04 | 6.65 | 10.13 |
| 4×4 blindfolded | 3:09.72 | 9:02.32 | 7:34.34 | — |
| 5×5 blindfolded | 7:33.73 | 16:34.00 | 19:52.00 | — |
| 3×3 Multi-Blind | 24 of 26 cubes · 58:53 | — | 10 of 12 cubes · 56:45 | — |
Year by year
every meeting, 217 rounds in allRecent meetings
newest first · averages where the round ranked on one, singles otherwise| Year | Competition | Event | Round | Chris Chi | Simon Kellum | ahead |
|---|---|---|---|---|---|---|
| 2026 | Rubik's WCA North American Championship 2026 | 2×2 | First round | 4.88 | 2.36 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | Second round | 8.66 | 7.60 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 | First round | 9.56 | 8.63 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 blindfolded | Second round | 23.38 | 1:27.86 | Chris Chi |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 blindfolded | First round | 29.71 | 1:05.08 | Chris Chi |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 Fewest Moves | Final | 22.33 | 23 moves | Chris Chi |
| 2026 | Rubik's WCA North American Championship 2026 | 3×3 one-handed | First round | 19.10 | 12.94 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | 4×4 | First round | 32.25 | 36.71 | Chris Chi |
| 2026 | Rubik's WCA North American Championship 2026 | 5×5 | First round | 1:04.81 | 1:10.10 | Chris Chi |
| 2026 | Rubik's WCA North American Championship 2026 | Clock | First round | 5.72 | 6.01 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Megaminx | First round | 1:04.30 | 55.39 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Pyraminx | First round | 5.37 | 2.10 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | Second round | 3.78 | 2.62 | Simon Kellum |
| 2026 | Rubik's WCA North American Championship 2026 | Skewb | First round | 3.04 | 2.89 | Simon Kellum |
Full careers: Chris Chi · 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.