| Ali121 vs Kazuya | 54–54 | 50.00% |
| Ali121 vs Jin | 46–49 | 48.42% |
| Ali121 vs Reina | 41–42 | 49.40% |
| Ali121 vs King | 41–35 | 53.95% |
| Ali121 vs Bryan | 29–46 | 38.67% |
| Ali121 vs Yoshimitsu | 30–28 | 51.72% |
| Ali121 vs Jun | 20–23 | 46.51% |
| Ali121 vs Hwoarang | 21–21 | 50.00% |
| Ali121 vs Eddy | 22–18 | 55.00% |
| Ali121 vs Paul | 19–19 | 50.00% |
| Ali121 vs Dragunov | 10–26 | 27.78% |
| Ali121 vs Steve | 18–16 | 52.94% |
| Ali121 vs Lili | 16–18 | 47.06% |
| Ali121 vs Law | 17–16 | 51.52% |
| Ali121 vs Nina | 14–17 | 45.16% |
| Ali121 vs Victor | 13–16 | 44.83% |
| Ali121 vs Lars | 13–15 | 46.43% |
| Ali121 vs Devil Jin | 13–14 | 48.15% |
| Ali121 vs Azucena | 11–14 | 44.00% |
| Ali121 vs Feng | 11–13 | 45.83% |
| Ali121 vs Leo | 13–11 | 54.17% |
| Ali121 vs Raven | 13–11 | 54.17% |
| Ali121 vs Asuka | 14–4 | 77.78% |
| Ali121 vs Heihachi | 7–11 | 38.89% |
| Ali121 vs Claudio | 9–7 | 56.25% |
| Ali121 vs Xiaoyu | 9–6 | 60.00% |
| Ali121 vs Jack-8 | 7–7 | 50.00% |
| Ali121 vs Alisa | 8–5 | 61.54% |
| Ali121 vs Shaheen | 4–5 | 44.44% |
| Ali121 vs Kuma | 2–7 | 22.22% |
| Ali121 vs Clive | 4–4 | 50.00% |
| Ali121 vs Lee | 4–3 | 57.14% |
| Ali121 vs Zafina | 4–3 | 57.14% |
| Ali121 vs Panda | 4–1 | 80.00% |
| Ali121 vs Leroy | 2–3 | 40.00% |
| Ali121 vs Fahkumram | 2–0 | 100.00% |
| Ali121 vs Anna | 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.