| Romainiu Siauba vs Steve | 19–18 | 51.35% |
| Romainiu Siauba vs King | 14–12 | 53.85% |
| Romainiu Siauba vs Law | 13–8 | 61.90% |
| Romainiu Siauba vs Eddy | 5–15 | 25.00% |
| Romainiu Siauba vs Hwoarang | 8–11 | 42.11% |
| Romainiu Siauba vs Bryan | 5–13 | 27.78% |
| Romainiu Siauba vs Jin | 8–8 | 50.00% |
| Romainiu Siauba vs Leroy | 10–6 | 62.50% |
| Romainiu Siauba vs Yoshimitsu | 9–6 | 60.00% |
| Romainiu Siauba vs Victor | 2–13 | 13.33% |
| Romainiu Siauba vs Kazuya | 7–7 | 50.00% |
| Romainiu Siauba vs Lili | 9–5 | 64.29% |
| Romainiu Siauba vs Dragunov | 6–8 | 42.86% |
| Romainiu Siauba vs Jun | 9–5 | 64.29% |
| Romainiu Siauba vs Reina | 4–10 | 28.57% |
| Romainiu Siauba vs Leo | 4–7 | 36.36% |
| Romainiu Siauba vs Claudio | 5–6 | 45.45% |
| Romainiu Siauba vs Azucena | 4–6 | 40.00% |
| Romainiu Siauba vs Clive | 3–7 | 30.00% |
| Romainiu Siauba vs Lars | 4–5 | 44.44% |
| Romainiu Siauba vs Nina | 9–0 | 100.00% |
| Romainiu Siauba vs Asuka | 6–2 | 75.00% |
| Romainiu Siauba vs Heihachi | 2–6 | 25.00% |
| Romainiu Siauba vs Anna | 6–1 | 85.71% |
| Romainiu Siauba vs Shaheen | 4–2 | 66.67% |
| Romainiu Siauba vs Paul | 2–3 | 40.00% |
| Romainiu Siauba vs Feng | 1–4 | 20.00% |
| Romainiu Siauba vs Lee | 4–1 | 80.00% |
| Romainiu Siauba vs Lidia | 2–3 | 40.00% |
| Romainiu Siauba vs Fahkumram | 3–2 | 60.00% |
| Romainiu Siauba vs Devil Jin | 3–1 | 75.00% |
| Romainiu Siauba vs Xiaoyu | 3–0 | 100.00% |
| Romainiu Siauba vs Alisa | 0–2 | 0.00% |
| Romainiu Siauba vs Raven | 2–0 | 100.00% |
| Romainiu Siauba vs Kuma | 1–0 | 100.00% |
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.