| Ioworks vs Reina | 34–25 | 57.63% |
| Ioworks vs King | 22–29 | 43.14% |
| Ioworks vs Kazuya | 17–13 | 56.67% |
| Ioworks vs Jun | 12–13 | 48.00% |
| Ioworks vs Jin | 8–16 | 33.33% |
| Ioworks vs Asuka | 13–10 | 56.52% |
| Ioworks vs Lidia | 14–9 | 60.87% |
| Ioworks vs Dragunov | 11–11 | 50.00% |
| Ioworks vs Law | 13–7 | 65.00% |
| Ioworks vs Hwoarang | 11–7 | 61.11% |
| Ioworks vs Steve | 8–7 | 53.33% |
| Ioworks vs Azucena | 7–8 | 46.67% |
| Ioworks vs Jack-8 | 5–8 | 38.46% |
| Ioworks vs Lili | 5–8 | 38.46% |
| Ioworks vs Victor | 4–9 | 30.77% |
| Ioworks vs Heihachi | 9–4 | 69.23% |
| Ioworks vs Paul | 4–7 | 36.36% |
| Ioworks vs Bryan | 4–7 | 36.36% |
| Ioworks vs Lee | 5–6 | 45.45% |
| Ioworks vs Feng | 4–6 | 40.00% |
| Ioworks vs Nina | 8–2 | 80.00% |
| Ioworks vs Lars | 7–1 | 87.50% |
| Ioworks vs Leo | 1–6 | 14.29% |
| Ioworks vs Yoshimitsu | 2–4 | 33.33% |
| Ioworks vs Devil Jin | 0–6 | 0.00% |
| Ioworks vs Eddy | 4–2 | 66.67% |
| Ioworks vs Zafina | 4–1 | 80.00% |
| Ioworks vs Claudio | 2–2 | 50.00% |
| Ioworks vs Alisa | 1–2 | 33.33% |
| Ioworks vs Leroy | 1–2 | 33.33% |
| Ioworks vs Fahkumram | 2–1 | 66.67% |
| Ioworks vs Xiaoyu | 0–2 | 0.00% |
| Ioworks vs Raven | 1–1 | 50.00% |
| Ioworks vs Kuma | 0–1 | 0.00% |
| Ioworks vs Panda | 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.