| Sekibayashi vs Reina | 27–24 | 52.94% |
| Sekibayashi vs Jun | 20–17 | 54.05% |
| Sekibayashi vs Jin | 10–25 | 28.57% |
| Sekibayashi vs Kazuya | 19–13 | 59.38% |
| Sekibayashi vs Steve | 11–18 | 37.93% |
| Sekibayashi vs Victor | 8–18 | 30.77% |
| Sekibayashi vs Azucena | 14–11 | 56.00% |
| Sekibayashi vs Hwoarang | 9–13 | 40.91% |
| Sekibayashi vs Yoshimitsu | 9–12 | 42.86% |
| Sekibayashi vs Devil Jin | 5–16 | 23.81% |
| Sekibayashi vs Dragunov | 10–11 | 47.62% |
| Sekibayashi vs King | 12–8 | 60.00% |
| Sekibayashi vs Lili | 10–10 | 50.00% |
| Sekibayashi vs Law | 8–10 | 44.44% |
| Sekibayashi vs Lars | 7–10 | 41.18% |
| Sekibayashi vs Alisa | 5–12 | 29.41% |
| Sekibayashi vs Lidia | 9–8 | 52.94% |
| Sekibayashi vs Paul | 4–11 | 26.67% |
| Sekibayashi vs Leroy | 6–9 | 40.00% |
| Sekibayashi vs Feng | 6–8 | 42.86% |
| Sekibayashi vs Nina | 5–9 | 35.71% |
| Sekibayashi vs Eddy | 3–11 | 21.43% |
| Sekibayashi vs Bryan | 4–7 | 36.36% |
| Sekibayashi vs Fahkumram | 5–5 | 50.00% |
| Sekibayashi vs Asuka | 2–7 | 22.22% |
| Sekibayashi vs Xiaoyu | 3–4 | 42.86% |
| Sekibayashi vs Claudio | 4–3 | 57.14% |
| Sekibayashi vs Lee | 3–4 | 42.86% |
| Sekibayashi vs Zafina | 2–3 | 40.00% |
| Sekibayashi vs Heihachi | 1–4 | 20.00% |
| Sekibayashi vs Jack-8 | 2–2 | 50.00% |
| Sekibayashi vs Leo | 2–2 | 50.00% |
| Sekibayashi vs Miary Zo | 2–2 | 50.00% |
| Sekibayashi vs Shaheen | 0–3 | 0.00% |
| Sekibayashi vs Kuma | 1–2 | 33.33% |
| Sekibayashi vs Raven | 0–3 | 0.00% |
| Sekibayashi vs Clive | 1–2 | 33.33% |
| Sekibayashi vs Anna | 0–2 | 0.00% |
| Sekibayashi vs Armor King | 0–2 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.