| Isaiah vs King | 35–25 | 58.33% |
| Isaiah vs Kazuya | 16–27 | 37.21% |
| Isaiah vs Eddy | 18–20 | 47.37% |
| Isaiah vs Jin | 15–18 | 45.45% |
| Isaiah vs Lili | 24–9 | 72.73% |
| Isaiah vs Law | 20–12 | 62.50% |
| Isaiah vs Paul | 12–17 | 41.38% |
| Isaiah vs Dragunov | 13–16 | 44.83% |
| Isaiah vs Reina | 15–14 | 51.72% |
| Isaiah vs Hwoarang | 18–10 | 64.29% |
| Isaiah vs Nina | 10–13 | 43.48% |
| Isaiah vs Azucena | 6–15 | 28.57% |
| Isaiah vs Victor | 8–13 | 38.10% |
| Isaiah vs Bryan | 7–13 | 35.00% |
| Isaiah vs Asuka | 8–11 | 42.11% |
| Isaiah vs Steve | 7–10 | 41.18% |
| Isaiah vs Yoshimitsu | 11–5 | 68.75% |
| Isaiah vs Leo | 9–7 | 56.25% |
| Isaiah vs Lee | 8–8 | 50.00% |
| Isaiah vs Jun | 5–11 | 31.25% |
| Isaiah vs Xiaoyu | 9–6 | 60.00% |
| Isaiah vs Alisa | 4–11 | 26.67% |
| Isaiah vs Clive | 6–6 | 50.00% |
| Isaiah vs Jack-8 | 5–5 | 50.00% |
| Isaiah vs Feng | 4–6 | 40.00% |
| Isaiah vs Lars | 8–2 | 80.00% |
| Isaiah vs Zafina | 4–4 | 50.00% |
| Isaiah vs Raven | 2–6 | 25.00% |
| Isaiah vs Kuma | 3–3 | 50.00% |
| Isaiah vs Heihachi | 2–4 | 33.33% |
| Isaiah vs Devil Jin | 4–1 | 80.00% |
| Isaiah vs Claudio | 1–3 | 25.00% |
| Isaiah vs Shaheen | 2–1 | 66.67% |
| Isaiah vs Lidia | 1–2 | 33.33% |
| Isaiah vs Panda | 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.