| Marcko vs Reina | 28–26 | 51.85% |
| Marcko vs King | 15–38 | 28.30% |
| Marcko vs Dragunov | 23–29 | 44.23% |
| Marcko vs Lili | 22–23 | 48.89% |
| Marcko vs Jin | 21–22 | 48.84% |
| Marcko vs Kazuya | 18–23 | 43.90% |
| Marcko vs Yoshimitsu | 15–15 | 50.00% |
| Marcko vs Hwoarang | 15–14 | 51.72% |
| Marcko vs Steve | 12–16 | 42.86% |
| Marcko vs Victor | 13–13 | 50.00% |
| Marcko vs Law | 6–17 | 26.09% |
| Marcko vs Jun | 15–8 | 65.22% |
| Marcko vs Azucena | 11–11 | 50.00% |
| Marcko vs Heihachi | 7–14 | 33.33% |
| Marcko vs Paul | 9–11 | 45.00% |
| Marcko vs Bryan | 8–12 | 40.00% |
| Marcko vs Lars | 12–8 | 60.00% |
| Marcko vs Asuka | 10–9 | 52.63% |
| Marcko vs Devil Jin | 4–12 | 25.00% |
| Marcko vs Alisa | 9–7 | 56.25% |
| Marcko vs Eddy | 9–5 | 64.29% |
| Marcko vs Nina | 2–11 | 15.38% |
| Marcko vs Leo | 4–7 | 36.36% |
| Marcko vs Lidia | 4–6 | 40.00% |
| Marcko vs Feng | 5–4 | 55.56% |
| Marcko vs Xiaoyu | 1–7 | 12.50% |
| Marcko vs Jack-8 | 2–6 | 25.00% |
| Marcko vs Lee | 5–3 | 62.50% |
| Marcko vs Claudio | 2–5 | 28.57% |
| Marcko vs Panda | 1–4 | 20.00% |
| Marcko vs Raven | 3–2 | 60.00% |
| Marcko vs Shaheen | 3–1 | 75.00% |
| Marcko vs Zafina | 2–2 | 50.00% |
| Marcko vs Kuma | 0–3 | 0.00% |
| Marcko vs Leroy | 1–1 | 50.00% |
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.