| Marv Castle vs Reina | 5–5 | 50.00% |
| Marv Castle vs Hwoarang | 4–3 | 57.14% |
| Marv Castle vs Jin | 2–4 | 33.33% |
| Marv Castle vs Dragunov | 2–3 | 40.00% |
| Marv Castle vs Law | 4–0 | 100.00% |
| Marv Castle vs Kazuya | 2–2 | 50.00% |
| Marv Castle vs Steve | 4–0 | 100.00% |
| Marv Castle vs Lidia | 2–2 | 50.00% |
| Marv Castle vs Lili | 2–1 | 66.67% |
| Marv Castle vs Lars | 1–2 | 33.33% |
| Marv Castle vs Alisa | 2–1 | 66.67% |
| Marv Castle vs Nina | 2–1 | 66.67% |
| Marv Castle vs Victor | 2–1 | 66.67% |
| Marv Castle vs Raven | 2–1 | 66.67% |
| Marv Castle vs Paul | 0–2 | 0.00% |
| Marv Castle vs Jack-8 | 1–1 | 50.00% |
| Marv Castle vs Zafina | 2–0 | 100.00% |
| Marv Castle vs Yoshimitsu | 1–0 | 100.00% |
| Marv Castle vs Asuka | 1–0 | 100.00% |
| Marv Castle vs Feng | 0–1 | 0.00% |
| Marv Castle vs Lee | 1–0 | 100.00% |
| Marv Castle vs Leroy | 1–0 | 100.00% |
| Marv Castle vs Azucena | 1–0 | 100.00% |
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.