| Islow vs Jin | 90–89–1 | 50.28% |
| Islow vs King | 88–86 | 50.57% |
| Islow vs Bryan | 68–66 | 50.75% |
| Islow vs Law | 88–45 | 66.17% |
| Islow vs Kazuya | 72–60 | 54.55% |
| Islow vs Dragunov | 52–45 | 53.61% |
| Islow vs Heihachi | 38–55 | 40.86% |
| Islow vs Armor King | 35–50 | 41.18% |
| Islow vs Steve | 28–44 | 38.89% |
| Islow vs Devil Jin | 32–36 | 47.06% |
| Islow vs Jun | 27–33 | 45.00% |
| Islow vs Paul | 28–29 | 49.12% |
| Islow vs Lee | 21–31 | 40.38% |
| Islow vs Fahkumram | 17–34 | 33.33% |
| Islow vs Claudio | 24–24 | 50.00% |
| Islow vs Eddy | 19–29 | 39.58% |
| Islow vs Yoshimitsu | 21–23 | 47.73% |
| Islow vs Hwoarang | 24–20 | 54.55% |
| Islow vs Lili | 20–20 | 50.00% |
| Islow vs Nina | 16–24 | 40.00% |
| Islow vs Victor | 19–19 | 50.00% |
| Islow vs Anna | 14–19 | 42.42% |
| Islow vs Asuka | 15–15 | 50.00% |
| Islow vs Reina | 11–17 | 39.29% |
| Islow vs Clive | 20–7 | 74.07% |
| Islow vs Lars | 5–18 | 21.74% |
| Islow vs Azucena | 15–8 | 65.22% |
| Islow vs Feng | 14–8 | 63.64% |
| Islow vs Alisa | 6–14 | 30.00% |
| Islow vs Jack-8 | 4–14 | 22.22% |
| Islow vs Lidia | 6–10 | 37.50% |
| Islow vs Xiaoyu | 3–11 | 21.43% |
| Islow vs Leo | 4–7 | 36.36% |
| Islow vs Shaheen | 0–8 | 0.00% |
| Islow vs Zafina | 4–4 | 50.00% |
| Islow vs Panda | 3–3 | 50.00% |
| Islow vs Kuma | 3–1 | 75.00% |
| Islow vs Leroy | 1–3 | 25.00% |
| Islow vs Miary Zo | 0–4 | 0.00% |
| Islow vs Raven | 0–1 | 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.