| SepukkuGuy vs Bryan | 37–24–1 | 60.66% |
| SepukkuGuy vs Paul | 23–30 | 43.40% |
| SepukkuGuy vs Kazuya | 34–19 | 64.15% |
| SepukkuGuy vs Armor King | 21–21 | 50.00% |
| SepukkuGuy vs Dragunov | 22–18 | 55.00% |
| SepukkuGuy vs Miary Zo | 20–20 | 50.00% |
| SepukkuGuy vs King | 20–18 | 52.63% |
| SepukkuGuy vs Hwoarang | 17–20 | 45.95% |
| SepukkuGuy vs Jin | 22–14 | 61.11% |
| SepukkuGuy vs Steve | 20–15 | 57.14% |
| SepukkuGuy vs Reina | 20–15 | 57.14% |
| SepukkuGuy vs Law | 19–15 | 55.88% |
| SepukkuGuy vs Lili | 10–19 | 34.48% |
| SepukkuGuy vs Heihachi | 15–14 | 51.72% |
| SepukkuGuy vs Yoshimitsu | 14–7 | 66.67% |
| SepukkuGuy vs Asuka | 11–10 | 52.38% |
| SepukkuGuy vs Lee | 5–15 | 25.00% |
| SepukkuGuy vs Fahkumram | 13–7 | 65.00% |
| SepukkuGuy vs Leroy | 12–7 | 63.16% |
| SepukkuGuy vs Alisa | 7–11 | 38.89% |
| SepukkuGuy vs Clive | 10–8 | 55.56% |
| SepukkuGuy vs Jun | 12–5 | 70.59% |
| SepukkuGuy vs Azucena | 10–7 | 58.82% |
| SepukkuGuy vs Raven | 6–10 | 37.50% |
| SepukkuGuy vs Victor | 9–6 | 60.00% |
| SepukkuGuy vs Devil Jin | 7–5 | 58.33% |
| SepukkuGuy vs Feng | 10–1 | 90.91% |
| SepukkuGuy vs Leo | 4–5 | 44.44% |
| SepukkuGuy vs Jack-8 | 4–4 | 50.00% |
| SepukkuGuy vs Claudio | 3–5 | 37.50% |
| SepukkuGuy vs Lidia | 3–5 | 37.50% |
| SepukkuGuy vs Anna | 7–1 | 87.50% |
| SepukkuGuy vs Shaheen | 5–2 | 71.43% |
| SepukkuGuy vs Eddy | 6–1 | 85.71% |
| SepukkuGuy vs Xiaoyu | 2–4 | 33.33% |
| SepukkuGuy vs Lars | 2–4 | 33.33% |
| SepukkuGuy vs Zafina | 2–3 | 40.00% |
| SepukkuGuy vs Kuma | 0–4 | 0.00% |
| SepukkuGuy vs Panda | 1–1 | 50.00% |
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.