| Sierra vs Yoshimitsu | 17–15 | 53.12% |
| Sierra vs Law | 15–8 | 65.22% |
| Sierra vs Jin | 12–11 | 52.17% |
| Sierra vs Azucena | 15–6 | 71.43% |
| Sierra vs Victor | 7–11 | 38.89% |
| Sierra vs Xiaoyu | 14–3 | 82.35% |
| Sierra vs Lili | 11–6 | 64.71% |
| Sierra vs Lee | 13–4 | 76.47% |
| Sierra vs Reina | 7–9 | 43.75% |
| Sierra vs King | 7–8 | 46.67% |
| Sierra vs Devil Jin | 10–5 | 66.67% |
| Sierra vs Dragunov | 11–4 | 73.33% |
| Sierra vs Leo | 6–9 | 40.00% |
| Sierra vs Alisa | 6–7 | 46.15% |
| Sierra vs Eddy | 9–3 | 75.00% |
| Sierra vs Hwoarang | 9–2 | 81.82% |
| Sierra vs Steve | 5–6 | 45.45% |
| Sierra vs Jack-8 | 6–3 | 66.67% |
| Sierra vs Lars | 5–4 | 55.56% |
| Sierra vs Jun | 6–3 | 66.67% |
| Sierra vs Bryan | 3–5 | 37.50% |
| Sierra vs Feng | 4–3 | 57.14% |
| Sierra vs Paul | 4–2 | 66.67% |
| Sierra vs Asuka | 3–3 | 50.00% |
| Sierra vs Nina | 3–3 | 50.00% |
| Sierra vs Raven | 3–3 | 50.00% |
| Sierra vs Zafina | 1–4 | 20.00% |
| Sierra vs Kazuya | 2–2 | 50.00% |
| Sierra vs Kuma | 3–1 | 75.00% |
| Sierra vs Leroy | 1–3 | 25.00% |
| Sierra vs Shaheen | 0–2 | 0.00% |
| Sierra vs Panda | 2–0 | 100.00% |
| Sierra vs Fahkumram | 1–0 | 100.00% |
| Sierra vs Miary Zo | 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.