| SierraSam vs Jin | 50–43 | 53.76% |
| SierraSam vs Hwoarang | 40–41 | 49.38% |
| SierraSam vs Law | 29–40 | 42.03% |
| SierraSam vs Kazuya | 33–35 | 48.53% |
| SierraSam vs King | 22–28 | 44.00% |
| SierraSam vs Steve | 31–19 | 62.00% |
| SierraSam vs Reina | 25–24 | 51.02% |
| SierraSam vs Eddy | 22–26 | 45.83% |
| SierraSam vs Bryan | 23–23 | 50.00% |
| SierraSam vs Paul | 17–19 | 47.22% |
| SierraSam vs Jun | 16–20 | 44.44% |
| SierraSam vs Yoshimitsu | 16–18 | 47.06% |
| SierraSam vs Dragunov | 15–18 | 45.45% |
| SierraSam vs Lili | 16–14 | 53.33% |
| SierraSam vs Victor | 12–17 | 41.38% |
| SierraSam vs Jack-8 | 18–9 | 66.67% |
| SierraSam vs Asuka | 12–13 | 48.00% |
| SierraSam vs Azucena | 7–18 | 28.00% |
| SierraSam vs Feng | 7–15 | 31.82% |
| SierraSam vs Lars | 8–14 | 36.36% |
| SierraSam vs Xiaoyu | 11–7 | 61.11% |
| SierraSam vs Nina | 7–11 | 38.89% |
| SierraSam vs Devil Jin | 4–13 | 23.53% |
| SierraSam vs Lee | 9–8 | 52.94% |
| SierraSam vs Heihachi | 9–8 | 52.94% |
| SierraSam vs Leo | 10–5 | 66.67% |
| SierraSam vs Raven | 4–10 | 28.57% |
| SierraSam vs Alisa | 6–7 | 46.15% |
| SierraSam vs Kuma | 9–4 | 69.23% |
| SierraSam vs Claudio | 4–8 | 33.33% |
| SierraSam vs Zafina | 8–3 | 72.73% |
| SierraSam vs Leroy | 4–7 | 36.36% |
| SierraSam vs Anna | 2–6 | 25.00% |
| SierraSam vs Lidia | 3–2 | 60.00% |
| SierraSam vs Shaheen | 2–2 | 50.00% |
| SierraSam vs Panda | 1–1 | 50.00% |
| SierraSam vs Clive | 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.