| Iovva vs Armor King | 9–8 | 52.94% |
| Iovva vs Hwoarang | 9–6 | 60.00% |
| Iovva vs King | 8–6 | 57.14% |
| Iovva vs Jin | 8–3 | 72.73% |
| Iovva vs Kazuya | 7–4 | 63.64% |
| Iovva vs Nina | 5–6 | 45.45% |
| Iovva vs Jun | 6–5 | 54.55% |
| Iovva vs Steve | 4–6 | 40.00% |
| Iovva vs Heihachi | 7–3 | 70.00% |
| Iovva vs Jack-8 | 8–0 | 100.00% |
| Iovva vs Dragunov | 5–3 | 62.50% |
| Iovva vs Clive | 6–2 | 75.00% |
| Iovva vs Lili | 3–4 | 42.86% |
| Iovva vs Azucena | 4–3 | 57.14% |
| Iovva vs Lars | 2–4 | 33.33% |
| Iovva vs Eddy | 3–3 | 50.00% |
| Iovva vs Law | 1–4 | 20.00% |
| Iovva vs Bryan | 2–3 | 40.00% |
| Iovva vs Claudio | 3–2 | 60.00% |
| Iovva vs Lidia | 2–3 | 40.00% |
| Iovva vs Shaheen | 3–1 | 75.00% |
| Iovva vs Reina | 4–0 | 100.00% |
| Iovva vs Fahkumram | 0–4 | 0.00% |
| Iovva vs Yoshimitsu | 1–2 | 33.33% |
| Iovva vs Asuka | 1–2 | 33.33% |
| Iovva vs Alisa | 2–1 | 66.67% |
| Iovva vs Panda | 1–2 | 33.33% |
| Iovva vs Zafina | 2–1 | 66.67% |
| Iovva vs Victor | 1–2 | 33.33% |
| Iovva vs Miary Zo | 1–2 | 33.33% |
| Iovva vs Paul | 2–0 | 100.00% |
| Iovva vs Devil Jin | 0–2 | 0.00% |
| Iovva vs Feng | 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.