| Master Roshi vs Heihachi | 54–60 | 47.37% |
| Master Roshi vs Jin | 41–47 | 46.59% |
| Master Roshi vs Kazuya | 46–40 | 53.49% |
| Master Roshi vs King | 35–46 | 43.21% |
| Master Roshi vs Bryan | 27–34 | 44.26% |
| Master Roshi vs Law | 23–36 | 38.98% |
| Master Roshi vs Reina | 36–22 | 62.07% |
| Master Roshi vs Steve | 21–27 | 43.75% |
| Master Roshi vs Dragunov | 27–17 | 61.36% |
| Master Roshi vs Lidia | 22–22 | 50.00% |
| Master Roshi vs Yoshimitsu | 21–14 | 60.00% |
| Master Roshi vs Hwoarang | 16–19 | 45.71% |
| Master Roshi vs Eddy | 15–19 | 44.12% |
| Master Roshi vs Paul | 17–16 | 51.52% |
| Master Roshi vs Jun | 13–19 | 40.62% |
| Master Roshi vs Asuka | 11–20 | 35.48% |
| Master Roshi vs Nina | 12–18 | 40.00% |
| Master Roshi vs Victor | 19–11 | 63.33% |
| Master Roshi vs Xiaoyu | 10–19 | 34.48% |
| Master Roshi vs Lili | 11–16 | 40.74% |
| Master Roshi vs Azucena | 17–6 | 73.91% |
| Master Roshi vs Devil Jin | 9–13 | 40.91% |
| Master Roshi vs Alisa | 7–15 | 31.82% |
| Master Roshi vs Jack-8 | 8–11 | 42.11% |
| Master Roshi vs Feng | 7–11 | 38.89% |
| Master Roshi vs Lars | 9–9 | 50.00% |
| Master Roshi vs Lee | 10–7 | 58.82% |
| Master Roshi vs Zafina | 5–11 | 31.25% |
| Master Roshi vs Claudio | 6–7 | 46.15% |
| Master Roshi vs Shaheen | 6–5 | 54.55% |
| Master Roshi vs Panda | 6–4 | 60.00% |
| Master Roshi vs Raven | 4–6 | 40.00% |
| Master Roshi vs Clive | 4–3 | 57.14% |
| Master Roshi vs Kuma | 3–3 | 50.00% |
| Master Roshi vs Leroy | 3–2 | 60.00% |
| Master Roshi vs Leo | 1–3 | 25.00% |
| Master Roshi vs Anna | 2–1 | 66.67% |
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.