| Not Zack vs King | 16–11 | 59.26% |
| Not Zack vs Armor King | 11–7 | 61.11% |
| Not Zack vs Reina | 7–10 | 41.18% |
| Not Zack vs Kazuya | 4–12 | 25.00% |
| Not Zack vs Steve | 10–4 | 71.43% |
| Not Zack vs Lili | 9–5 | 64.29% |
| Not Zack vs Dragunov | 6–8 | 42.86% |
| Not Zack vs Lee | 7–7 | 50.00% |
| Not Zack vs Azucena | 7–7 | 50.00% |
| Not Zack vs Jun | 3–8 | 27.27% |
| Not Zack vs Yoshimitsu | 4–4 | 50.00% |
| Not Zack vs Xiaoyu | 4–4 | 50.00% |
| Not Zack vs Bryan | 5–3 | 62.50% |
| Not Zack vs Asuka | 3–5 | 37.50% |
| Not Zack vs Lars | 4–4 | 50.00% |
| Not Zack vs Hwoarang | 1–6 | 14.29% |
| Not Zack vs Devil Jin | 5–2 | 71.43% |
| Not Zack vs Claudio | 6–1 | 85.71% |
| Not Zack vs Paul | 3–3 | 50.00% |
| Not Zack vs Jack-8 | 3–3 | 50.00% |
| Not Zack vs Leo | 4–2 | 66.67% |
| Not Zack vs Law | 4–1 | 80.00% |
| Not Zack vs Feng | 3–2 | 60.00% |
| Not Zack vs Alisa | 4–1 | 80.00% |
| Not Zack vs Jin | 1–3 | 25.00% |
| Not Zack vs Kuma | 4–0 | 100.00% |
| Not Zack vs Leroy | 1–3 | 25.00% |
| Not Zack vs Victor | 3–1 | 75.00% |
| Not Zack vs Nina | 1–2 | 33.33% |
| Not Zack vs Raven | 2–1 | 66.67% |
| Not Zack vs Zafina | 2–0 | 100.00% |
| Not Zack vs Heihachi | 2–0 | 100.00% |
| Not Zack vs Clive | 2–0 | 100.00% |
| Not Zack vs Eddy | 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.