| Mike Sierra vs King | 4–7 | 36.36% |
| Mike Sierra vs Steve | 6–4 | 60.00% |
| Mike Sierra vs Law | 2–5 | 28.57% |
| Mike Sierra vs Reina | 0–7 | 0.00% |
| Mike Sierra vs Hwoarang | 3–3 | 50.00% |
| Mike Sierra vs Kazuya | 3–3 | 50.00% |
| Mike Sierra vs Lili | 0–5 | 0.00% |
| Mike Sierra vs Victor | 2–3 | 40.00% |
| Mike Sierra vs Yoshimitsu | 2–2 | 50.00% |
| Mike Sierra vs Bryan | 2–2 | 50.00% |
| Mike Sierra vs Dragunov | 1–3 | 25.00% |
| Mike Sierra vs Raven | 2–2 | 50.00% |
| Mike Sierra vs Jin | 2–1 | 66.67% |
| Mike Sierra vs Alisa | 0–3 | 0.00% |
| Mike Sierra vs Lee | 2–1 | 66.67% |
| Mike Sierra vs Heihachi | 3–0 | 100.00% |
| Mike Sierra vs Devil Jin | 2–0 | 100.00% |
| Mike Sierra vs Leo | 1–1 | 50.00% |
| Mike Sierra vs Lars | 0–2 | 0.00% |
| Mike Sierra vs Paul | 1–0 | 100.00% |
| Mike Sierra vs Asuka | 1–0 | 100.00% |
| Mike Sierra vs Kuma | 0–1 | 0.00% |
| Mike Sierra vs Panda | 0–1 | 0.00% |
| Mike Sierra vs Zafina | 0–1 | 0.00% |
| Mike Sierra vs Azucena | 1–0 | 100.00% |
| Mike Sierra vs Eddy | 0–1 | 0.00% |
| Mike Sierra vs Lidia | 0–1 | 0.00% |
| Mike Sierra 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.