| Zack vs Reina | 26–18 | 59.09% |
| Zack vs King | 17–12 | 58.62% |
| Zack vs Steve | 15–12 | 55.56% |
| Zack vs Jin | 15–11 | 57.69% |
| Zack vs Hwoarang | 11–12 | 47.83% |
| Zack vs Law | 12–10 | 54.55% |
| Zack vs Lili | 14–5 | 73.68% |
| Zack vs Victor | 9–10 | 47.37% |
| Zack vs Kazuya | 7–10 | 41.18% |
| Zack vs Yoshimitsu | 9–7 | 56.25% |
| Zack vs Bryan | 9–4 | 69.23% |
| Zack vs Alisa | 7–5 | 58.33% |
| Zack vs Jun | 3–8 | 27.27% |
| Zack vs Eddy | 4–7 | 36.36% |
| Zack vs Lars | 4–6 | 40.00% |
| Zack vs Azucena | 7–3 | 70.00% |
| Zack vs Dragunov | 3–6 | 33.33% |
| Zack vs Devil Jin | 5–3 | 62.50% |
| Zack vs Paul | 1–6 | 14.29% |
| Zack vs Asuka | 3–4 | 42.86% |
| Zack vs Clive | 5–2 | 71.43% |
| Zack vs Nina | 4–2 | 66.67% |
| Zack vs Claudio | 4–1 | 80.00% |
| Zack vs Heihachi | 4–1 | 80.00% |
| Zack vs Xiaoyu | 1–3 | 25.00% |
| Zack vs Jack-8 | 3–1 | 75.00% |
| Zack vs Leo | 1–3 | 25.00% |
| Zack vs Shaheen | 2–2 | 50.00% |
| Zack vs Kuma | 2–2 | 50.00% |
| Zack vs Fahkumram | 2–2 | 50.00% |
| Zack vs Lee | 0–3 | 0.00% |
| Zack vs Feng | 1–0 | 100.00% |
| Zack vs Zafina | 0–1 | 0.00% |
| Zack vs Leroy | 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.