| I_mashu_buttons vs King | 17–19 | 47.22% |
| I_mashu_buttons vs Hwoarang | 24–8 | 75.00% |
| I_mashu_buttons vs Eddy | 8–18 | 30.77% |
| I_mashu_buttons vs Steve | 10–14 | 41.67% |
| I_mashu_buttons vs Reina | 11–13 | 45.83% |
| I_mashu_buttons vs Jun | 11–11 | 50.00% |
| I_mashu_buttons vs Law | 12–9 | 57.14% |
| I_mashu_buttons vs Yoshimitsu | 12–6 | 66.67% |
| I_mashu_buttons vs Jin | 12–6 | 66.67% |
| I_mashu_buttons vs Bryan | 7–9 | 43.75% |
| I_mashu_buttons vs Kazuya | 7–7 | 50.00% |
| I_mashu_buttons vs Asuka | 7–7 | 50.00% |
| I_mashu_buttons vs Lars | 7–6 | 53.85% |
| I_mashu_buttons vs Lili | 6–6 | 50.00% |
| I_mashu_buttons vs Dragunov | 7–3 | 70.00% |
| I_mashu_buttons vs Lidia | 7–3 | 70.00% |
| I_mashu_buttons vs Leo | 5–4 | 55.56% |
| I_mashu_buttons vs Heihachi | 6–3 | 66.67% |
| I_mashu_buttons vs Anna | 4–5 | 44.44% |
| I_mashu_buttons vs Paul | 1–7 | 12.50% |
| I_mashu_buttons vs Devil Jin | 6–2 | 75.00% |
| I_mashu_buttons vs Azucena | 1–7 | 12.50% |
| I_mashu_buttons vs Victor | 2–6 | 25.00% |
| I_mashu_buttons vs Leroy | 4–3 | 57.14% |
| I_mashu_buttons vs Feng | 4–2 | 66.67% |
| I_mashu_buttons vs Alisa | 4–2 | 66.67% |
| I_mashu_buttons vs Nina | 3–3 | 50.00% |
| I_mashu_buttons vs Xiaoyu | 2–3 | 40.00% |
| I_mashu_buttons vs Raven | 3–2 | 60.00% |
| I_mashu_buttons vs Lee | 1–3 | 25.00% |
| I_mashu_buttons vs Kuma | 2–2 | 50.00% |
| I_mashu_buttons vs Zafina | 3–1 | 75.00% |
| I_mashu_buttons vs Clive | 1–3 | 25.00% |
| I_mashu_buttons vs Jack-8 | 1–0 | 100.00% |
| I_mashu_buttons vs Fahkumram | 0–1 | 0.00% |
| I_mashu_buttons vs Armor King | 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.