| Piro vs Steve | 19–41 | 31.67% |
| Piro vs King | 12–42 | 22.22% |
| Piro vs Jin | 16–33 | 32.65% |
| Piro vs Reina | 16–23 | 41.03% |
| Piro vs Clive | 10–25 | 28.57% |
| Piro vs Dragunov | 16–16 | 50.00% |
| Piro vs Bryan | 10–21 | 32.26% |
| Piro vs Kazuya | 13–17 | 43.33% |
| Piro vs Hwoarang | 12–15 | 44.44% |
| Piro vs Yoshimitsu | 7–18 | 28.00% |
| Piro vs Eddy | 0–24 | 0.00% |
| Piro vs Jun | 5–17 | 22.73% |
| Piro vs Paul | 8–12 | 40.00% |
| Piro vs Alisa | 5–14 | 26.32% |
| Piro vs Devil Jin | 5–12 | 29.41% |
| Piro vs Azucena | 8–9 | 47.06% |
| Piro vs Law | 1–14 | 6.67% |
| Piro vs Jack-8 | 5–10 | 33.33% |
| Piro vs Lili | 4–11 | 26.67% |
| Piro vs Zafina | 4–11 | 26.67% |
| Piro vs Victor | 5–9 | 35.71% |
| Piro vs Xiaoyu | 3–9 | 25.00% |
| Piro vs Nina | 5–7 | 41.67% |
| Piro vs Lee | 2–10 | 16.67% |
| Piro vs Leroy | 2–10 | 16.67% |
| Piro vs Heihachi | 3–9 | 25.00% |
| Piro vs Lidia | 2–8 | 20.00% |
| Piro vs Asuka | 4–3 | 57.14% |
| Piro vs Lars | 1–5 | 16.67% |
| Piro vs Shaheen | 2–4 | 33.33% |
| Piro vs Kuma | 1–5 | 16.67% |
| Piro vs Claudio | 0–5 | 0.00% |
| Piro vs Armor King | 1–4 | 20.00% |
| Piro vs Feng | 0–4 | 0.00% |
| Piro vs Fahkumram | 1–2 | 33.33% |
| Piro vs Leo | 0–2 | 0.00% |
| Piro vs Panda | 0–2 | 0.00% |
| Piro vs Raven | 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.