| Isaih Senpai vs Jin | 82–99 | 45.30% |
| Isaih Senpai vs Kazuya | 100–73 | 57.80% |
| Isaih Senpai vs Hwoarang | 79–78 | 50.32% |
| Isaih Senpai vs King | 89–63 | 58.55% |
| Isaih Senpai vs Bryan | 98–53 | 64.90% |
| Isaih Senpai vs Reina | 83–47 | 63.85% |
| Isaih Senpai vs Steve | 84–43 | 66.14% |
| Isaih Senpai vs Jun | 75–50 | 60.00% |
| Isaih Senpai vs Dragunov | 63–53 | 54.31% |
| Isaih Senpai vs Lidia | 64–36 | 64.00% |
| Isaih Senpai vs Paul | 56–39 | 58.95% |
| Isaih Senpai vs Lili | 57–36 | 61.29% |
| Isaih Senpai vs Lee | 54–38 | 58.70% |
| Isaih Senpai vs Azucena | 51–39 | 56.67% |
| Isaih Senpai vs Lars | 57–30 | 65.52% |
| Isaih Senpai vs Law | 48–38 | 55.81% |
| Isaih Senpai vs Heihachi | 44–42 | 51.16% |
| Isaih Senpai vs Devil Jin | 47–24 | 66.20% |
| Isaih Senpai vs Leo | 43–28 | 60.56% |
| Isaih Senpai vs Victor | 44–26 | 62.86% |
| Isaih Senpai vs Eddy | 40–29 | 57.97% |
| Isaih Senpai vs Asuka | 40–28 | 58.82% |
| Isaih Senpai vs Clive | 35–29 | 54.69% |
| Isaih Senpai vs Xiaoyu | 33–30 | 52.38% |
| Isaih Senpai vs Yoshimitsu | 24–32 | 42.86% |
| Isaih Senpai vs Nina | 27–27 | 50.00% |
| Isaih Senpai vs Anna | 30–24 | 55.56% |
| Isaih Senpai vs Feng | 28–24 | 53.85% |
| Isaih Senpai vs Jack-8 | 23–25 | 47.92% |
| Isaih Senpai vs Claudio | 23–19 | 54.76% |
| Isaih Senpai vs Raven | 18–24 | 42.86% |
| Isaih Senpai vs Leroy | 19–22 | 46.34% |
| Isaih Senpai vs Zafina | 21–11 | 65.62% |
| Isaih Senpai vs Armor King | 18–10 | 64.29% |
| Isaih Senpai vs Shaheen | 15–12 | 55.56% |
| Isaih Senpai vs Alisa | 17–9 | 65.38% |
| Isaih Senpai vs Kuma | 11–13 | 45.83% |
| Isaih Senpai vs Miary Zo | 6–14 | 30.00% |
| Isaih Senpai vs Fahkumram | 4–4 | 50.00% |
| Isaih Senpai vs Panda | 3–1 | 75.00% |
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.