| _Day vs Steve | 18–10 | 64.29% |
| _Day vs Jin | 6–19 | 24.00% |
| _Day vs King | 17–7 | 70.83% |
| _Day vs Hwoarang | 18–5 | 78.26% |
| _Day vs Kazuya | 7–15 | 31.82% |
| _Day vs Dragunov | 10–11 | 47.62% |
| _Day vs Reina | 12–9 | 57.14% |
| _Day vs Azucena | 11–9 | 55.00% |
| _Day vs Bryan | 9–10 | 47.37% |
| _Day vs Asuka | 7–10 | 41.18% |
| _Day vs Yoshimitsu | 5–11 | 31.25% |
| _Day vs Lee | 8–8 | 50.00% |
| _Day vs Law | 5–8 | 38.46% |
| _Day vs Lars | 6–5 | 54.55% |
| _Day vs Jun | 4–6 | 40.00% |
| _Day vs Xiaoyu | 5–4 | 55.56% |
| _Day vs Lili | 3–6 | 33.33% |
| _Day vs Nina | 6–3 | 66.67% |
| _Day vs Paul | 4–3 | 57.14% |
| _Day vs Victor | 3–4 | 42.86% |
| _Day vs Raven | 3–3 | 50.00% |
| _Day vs Alisa | 3–2 | 60.00% |
| _Day vs Leroy | 2–3 | 40.00% |
| _Day vs Jack-8 | 2–2 | 50.00% |
| _Day vs Feng | 2–2 | 50.00% |
| _Day vs Claudio | 2–2 | 50.00% |
| _Day vs Kuma | 1–3 | 25.00% |
| _Day vs Zafina | 1–3 | 25.00% |
| _Day vs Devil Jin | 2–1 | 66.67% |
| _Day vs Leo | 2–1 | 66.67% |
| _Day vs Heihachi | 2–1 | 66.67% |
| _Day vs Eddy | 2–0 | 100.00% |
| _Day vs Lidia | 0–2 | 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.