| Pira vs Kazuya | 113–139 | 44.84% |
| Pira vs Jin | 99–109 | 47.60% |
| Pira vs King | 101–90 | 52.88% |
| Pira vs Bryan | 85–94 | 47.49% |
| Pira vs Heihachi | 95–80 | 54.29% |
| Pira vs Hwoarang | 89–83 | 51.74% |
| Pira vs Law | 88–80 | 52.38% |
| Pira vs Dragunov | 74–80 | 48.05% |
| Pira vs Reina | 68–82 | 45.33% |
| Pira vs Paul | 76–61 | 55.47% |
| Pira vs Steve | 71–65 | 52.21% |
| Pira vs Lili | 64–68 | 48.48% |
| Pira vs Armor King | 61–65 | 48.41% |
| Pira vs Yoshimitsu | 60–64 | 48.39% |
| Pira vs Fahkumram | 54–63 | 46.15% |
| Pira vs Lee | 51–43 | 54.26% |
| Pira vs Devil Jin | 38–54 | 41.30% |
| Pira vs Alisa | 48–39 | 55.17% |
| Pira vs Anna | 50–36 | 58.14% |
| Pira vs Feng | 47–37 | 55.95% |
| Pira vs Jun | 31–46 | 40.26% |
| Pira vs Lidia | 41–36 | 53.25% |
| Pira vs Xiaoyu | 30–42 | 41.67% |
| Pira vs Nina | 36–36 | 50.00% |
| Pira vs Azucena | 45–26 | 63.38% |
| Pira vs Clive | 30–41 | 42.25% |
| Pira vs Raven | 35–35 | 50.00% |
| Pira vs Victor | 31–37 | 45.59% |
| Pira vs Asuka | 34–30 | 53.12% |
| Pira vs Lars | 30–32 | 48.39% |
| Pira vs Miary Zo | 19–23 | 45.24% |
| Pira vs Claudio | 12–28 | 30.00% |
| Pira vs Eddy | 15–22 | 40.54% |
| Pira vs Jack-8 | 18–18 | 50.00% |
| Pira vs Zafina | 14–17 | 45.16% |
| Pira vs Leroy | 14–17 | 45.16% |
| Pira vs Leo | 13–8 | 61.90% |
| Pira vs Shaheen | 12–7 | 63.16% |
| Pira vs Kuma | 6–13 | 31.58% |
| Pira vs Panda | 4–6 | 40.00% |
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.