| Alastair vs King | 11–8 | 57.89% |
| Alastair vs Armor King | 5–6 | 45.45% |
| Alastair vs Hwoarang | 6–4 | 60.00% |
| Alastair vs Lidia | 5–4 | 55.56% |
| Alastair vs Jin | 2–6 | 25.00% |
| Alastair vs Law | 2–5 | 28.57% |
| Alastair vs Steve | 5–1 | 83.33% |
| Alastair vs Lars | 2–3 | 40.00% |
| Alastair vs Kazuya | 2–2 | 50.00% |
| Alastair vs Dragunov | 2–2 | 50.00% |
| Alastair vs Clive | 2–2 | 50.00% |
| Alastair vs Bryan | 3–0 | 100.00% |
| Alastair vs Feng | 2–1 | 66.67% |
| Alastair vs Nina | 1–2 | 33.33% |
| Alastair vs Lee | 2–1 | 66.67% |
| Alastair vs Leroy | 3–0 | 100.00% |
| Alastair vs Paul | 1–1 | 50.00% |
| Alastair vs Xiaoyu | 0–2 | 0.00% |
| Alastair vs Jack-8 | 2–0 | 100.00% |
| Alastair vs Claudio | 0–2 | 0.00% |
| Alastair vs Victor | 0–2 | 0.00% |
| Alastair vs Raven | 0–2 | 0.00% |
| Alastair vs Heihachi | 0–2 | 0.00% |
| Alastair vs Yoshimitsu | 1–0 | 100.00% |
| Alastair vs Asuka | 1–0 | 100.00% |
| Alastair vs Devil Jin | 0–1 | 0.00% |
| Alastair vs Lili | 1–0 | 100.00% |
| Alastair vs Kuma | 1–0 | 100.00% |
| Alastair vs Jun | 1–0 | 100.00% |
| Alastair vs Eddy | 1–0 | 100.00% |
| Alastair 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.