| Masontrock vs King | 9–7 | 56.25% |
| Masontrock vs Steve | 9–3 | 75.00% |
| Masontrock vs Lars | 7–4 | 63.64% |
| Masontrock vs Heihachi | 7–3 | 70.00% |
| Masontrock vs Clive | 5–5 | 50.00% |
| Masontrock vs Hwoarang | 2–7 | 22.22% |
| Masontrock vs Armor King | 4–5 | 44.44% |
| Masontrock vs Law | 5–3 | 62.50% |
| Masontrock vs Fahkumram | 3–5 | 37.50% |
| Masontrock vs Bryan | 5–2 | 71.43% |
| Masontrock vs Lili | 3–4 | 42.86% |
| Masontrock vs Dragunov | 2–5 | 28.57% |
| Masontrock vs Lidia | 5–2 | 71.43% |
| Masontrock vs Yoshimitsu | 3–3 | 50.00% |
| Masontrock vs Kazuya | 4–2 | 66.67% |
| Masontrock vs Reina | 5–1 | 83.33% |
| Masontrock vs Leo | 3–2 | 60.00% |
| Masontrock vs Jun | 4–1 | 80.00% |
| Masontrock vs Eddy | 1–4 | 20.00% |
| Masontrock vs Paul | 0–4 | 0.00% |
| Masontrock vs Jin | 3–1 | 75.00% |
| Masontrock vs Devil Jin | 3–1 | 75.00% |
| Masontrock vs Kuma | 2–2 | 50.00% |
| Masontrock vs Victor | 2–2 | 50.00% |
| Masontrock vs Alisa | 0–3 | 0.00% |
| Masontrock vs Claudio | 2–1 | 66.67% |
| Masontrock vs Lee | 3–0 | 100.00% |
| Masontrock vs Azucena | 0–3 | 0.00% |
| Masontrock vs Raven | 2–1 | 66.67% |
| Masontrock vs Xiaoyu | 0–2 | 0.00% |
| Masontrock vs Nina | 0–2 | 0.00% |
| Masontrock vs Zafina | 0–2 | 0.00% |
| Masontrock vs Anna | 0–1 | 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.