| Mariuszek vs Jin | 108–103 | 51.18% |
| Mariuszek vs Kazuya | 106–100–1 | 51.46% |
| Mariuszek vs Bryan | 68–81 | 45.64% |
| Mariuszek vs Hwoarang | 70–75 | 48.28% |
| Mariuszek vs Armor King | 71–72 | 49.65% |
| Mariuszek vs King | 65–71 | 47.79% |
| Mariuszek vs Law | 72–59 | 54.96% |
| Mariuszek vs Paul | 55–61 | 47.41% |
| Mariuszek vs Heihachi | 59–48–1 | 55.14% |
| Mariuszek vs Dragunov | 61–45 | 57.55% |
| Mariuszek vs Steve | 50–52 | 49.02% |
| Mariuszek vs Reina | 45–42 | 51.72% |
| Mariuszek vs Jun | 38–47 | 44.71% |
| Mariuszek vs Miary Zo | 47–37 | 55.95% |
| Mariuszek vs Lili | 42–40 | 51.22% |
| Mariuszek vs Lee | 37–40 | 48.05% |
| Mariuszek vs Yoshimitsu | 28–45 | 38.36% |
| Mariuszek vs Fahkumram | 38–32 | 54.29% |
| Mariuszek vs Devil Jin | 45–24 | 65.22% |
| Mariuszek vs Feng | 31–31 | 50.00% |
| Mariuszek vs Eddy | 28–34 | 45.16% |
| Mariuszek vs Lidia | 39–22 | 63.93% |
| Mariuszek vs Asuka | 26–34 | 43.33% |
| Mariuszek vs Xiaoyu | 30–21 | 58.82% |
| Mariuszek vs Nina | 29–22 | 56.86% |
| Mariuszek vs Azucena | 29–20 | 59.18% |
| Mariuszek vs Alisa | 20–27 | 42.55% |
| Mariuszek vs Lars | 24–20 | 54.55% |
| Mariuszek vs Jack-8 | 22–18 | 55.00% |
| Mariuszek vs Clive | 12–26 | 31.58% |
| Mariuszek vs Claudio | 12–22 | 35.29% |
| Mariuszek vs Leo | 9–21 | 30.00% |
| Mariuszek vs Anna | 10–20 | 33.33% |
| Mariuszek vs Zafina | 5–18 | 21.74% |
| Mariuszek vs Victor | 11–12 | 47.83% |
| Mariuszek vs Leroy | 8–11 | 42.11% |
| Mariuszek vs Raven | 8–11 | 42.11% |
| Mariuszek vs Kuma | 11–3 | 78.57% |
| Mariuszek vs Panda | 4–5 | 44.44% |
| Mariuszek vs Shaheen | 2–6 | 25.00% |
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.