| Isshin vs Bryan | 82–62 | 56.94% |
| Isshin vs King | 89–50 | 64.03% |
| Isshin vs Steve | 67–48 | 58.26% |
| Isshin vs Kazuya | 60–51 | 54.05% |
| Isshin vs Jin | 49–48 | 50.52% |
| Isshin vs Lars | 56–38 | 59.57% |
| Isshin vs Yoshimitsu | 39–52 | 42.86% |
| Isshin vs Hwoarang | 56–33 | 62.92% |
| Isshin vs Paul | 47–40 | 54.02% |
| Isshin vs Dragunov | 58–29 | 66.67% |
| Isshin vs Reina | 43–40 | 51.81% |
| Isshin vs Devil Jin | 50–32 | 60.98% |
| Isshin vs Law | 38–37 | 50.67% |
| Isshin vs Lee | 39–35 | 52.70% |
| Isshin vs Raven | 43–30 | 58.90% |
| Isshin vs Lili | 39–29 | 57.35% |
| Isshin vs Feng | 38–23 | 62.30% |
| Isshin vs Jun | 26–34 | 43.33% |
| Isshin vs Azucena | 33–27 | 55.00% |
| Isshin vs Asuka | 32–25 | 56.14% |
| Isshin vs Xiaoyu | 29–24–1 | 54.72% |
| Isshin vs Leo | 25–29 | 46.30% |
| Isshin vs Nina | 25–25 | 50.00% |
| Isshin vs Zafina | 38–10 | 79.17% |
| Isshin vs Claudio | 31–16 | 65.96% |
| Isshin vs Heihachi | 24–21 | 53.33% |
| Isshin vs Victor | 29–15 | 65.91% |
| Isshin vs Lidia | 22–15 | 59.46% |
| Isshin vs Leroy | 24–12 | 66.67% |
| Isshin vs Clive | 18–17 | 51.43% |
| Isshin vs Jack-8 | 23–10 | 69.70% |
| Isshin vs Shaheen | 16–16 | 50.00% |
| Isshin vs Kuma | 12–18 | 40.00% |
| Isshin vs Fahkumram | 18–9 | 66.67% |
| Isshin vs Alisa | 12–12 | 50.00% |
| Isshin vs Eddy | 11–11 | 50.00% |
| Isshin vs Panda | 10–5 | 66.67% |
| Isshin vs Anna | 6–6 | 50.00% |
| Isshin vs Armor King | 1–8 | 11.11% |
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.