| Marek vs Jin | 73–107 | 40.56% |
| Marek vs Kazuya | 59–77 | 43.38% |
| Marek vs King | 49–65 | 42.98% |
| Marek vs Hwoarang | 44–63 | 41.12% |
| Marek vs Reina | 45–52 | 46.39% |
| Marek vs Law | 35–57 | 38.04% |
| Marek vs Eddy | 38–54 | 41.30% |
| Marek vs Jun | 43–45 | 48.86% |
| Marek vs Bryan | 37–47 | 44.05% |
| Marek vs Steve | 38–46 | 45.24% |
| Marek vs Lili | 42–37 | 53.16% |
| Marek vs Dragunov | 27–51 | 34.62% |
| Marek vs Yoshimitsu | 36–39 | 48.00% |
| Marek vs Paul | 31–31 | 50.00% |
| Marek vs Nina | 23–35 | 39.66% |
| Marek vs Azucena | 17–32 | 34.69% |
| Marek vs Asuka | 23–23 | 50.00% |
| Marek vs Lee | 27–18 | 60.00% |
| Marek vs Victor | 14–27 | 34.15% |
| Marek vs Feng | 20–19 | 51.28% |
| Marek vs Xiaoyu | 19–19 | 50.00% |
| Marek vs Devil Jin | 16–22 | 42.11% |
| Marek vs Alisa | 16–22 | 42.11% |
| Marek vs Lars | 16–17 | 48.48% |
| Marek vs Leroy | 10–20 | 33.33% |
| Marek vs Jack-8 | 14–11 | 56.00% |
| Marek vs Leo | 8–17 | 32.00% |
| Marek vs Lidia | 9–13 | 40.91% |
| Marek vs Shaheen | 10–10 | 50.00% |
| Marek vs Heihachi | 9–10 | 47.37% |
| Marek vs Claudio | 8–9 | 47.06% |
| Marek vs Raven | 5–8–1 | 38.46% |
| Marek vs Clive | 2–7 | 22.22% |
| Marek vs Kuma | 2–4 | 33.33% |
| Marek vs Panda | 2–2 | 50.00% |
| Marek vs Fahkumram | 3–1 | 75.00% |
| Marek vs Armor King | 2–2 | 50.00% |
| Marek vs Zafina | 0–3 | 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.