| Isaiah vs King | 13–24 | 35.14% |
| Isaiah vs Fahkumram | 17–20 | 45.95% |
| Isaiah vs Kazuya | 16–16 | 50.00% |
| Isaiah vs Steve | 17–11 | 60.71% |
| Isaiah vs Law | 11–9 | 55.00% |
| Isaiah vs Nina | 13–4 | 76.47% |
| Isaiah vs Hwoarang | 6–10 | 37.50% |
| Isaiah vs Heihachi | 7–8 | 46.67% |
| Isaiah vs Reina | 5–9 | 35.71% |
| Isaiah vs Lars | 9–4 | 69.23% |
| Isaiah vs Claudio | 4–9 | 30.77% |
| Isaiah vs Armor King | 8–4 | 66.67% |
| Isaiah vs Jun | 4–7 | 36.36% |
| Isaiah vs Azucena | 7–4 | 63.64% |
| Isaiah vs Eddy | 5–6 | 45.45% |
| Isaiah vs Lidia | 5–6 | 45.45% |
| Isaiah vs Clive | 6–5 | 54.55% |
| Isaiah vs Jin | 5–5 | 50.00% |
| Isaiah vs Bryan | 3–7 | 30.00% |
| Isaiah vs Dragunov | 3–7 | 30.00% |
| Isaiah vs Yoshimitsu | 7–2 | 77.78% |
| Isaiah vs Victor | 8–0 | 100.00% |
| Isaiah vs Zafina | 5–2 | 71.43% |
| Isaiah vs Miary Zo | 6–1 | 85.71% |
| Isaiah vs Xiaoyu | 4–2 | 66.67% |
| Isaiah vs Feng | 4–2 | 66.67% |
| Isaiah vs Alisa | 0–5 | 0.00% |
| Isaiah vs Asuka | 0–4 | 0.00% |
| Isaiah vs Lili | 3–1 | 75.00% |
| Isaiah vs Anna | 0–4 | 0.00% |
| Isaiah vs Paul | 1–2 | 33.33% |
| Isaiah vs Shaheen | 2–1 | 66.67% |
| Isaiah vs Leo | 0–2 | 0.00% |
| Isaiah vs Lee | 2–0 | 100.00% |
| Isaiah vs Leroy | 2–0 | 100.00% |
| Isaiah vs Jack-8 | 1–0 | 100.00% |
| Isaiah vs Devil Jin | 1–0 | 100.00% |
| Isaiah vs Panda | 1–0 | 100.00% |
| Isaiah vs Raven | 1–0 | 100.00% |
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.