| Harry Mason vs Jin | 160–152 | 51.28% |
| Harry Mason vs Kazuya | 154–109 | 58.56% |
| Harry Mason vs Bryan | 131–114 | 53.47% |
| Harry Mason vs Law | 132–86 | 60.55% |
| Harry Mason vs Reina | 99–110 | 47.37% |
| Harry Mason vs Yoshimitsu | 104–92 | 53.06% |
| Harry Mason vs Hwoarang | 106–86 | 55.21% |
| Harry Mason vs King | 108–79 | 57.75% |
| Harry Mason vs Lars | 105–72 | 59.32% |
| Harry Mason vs Lili | 87–80 | 52.10% |
| Harry Mason vs Steve | 82–76 | 51.90% |
| Harry Mason vs Devil Jin | 71–73 | 49.31% |
| Harry Mason vs Xiaoyu | 88–55 | 61.54% |
| Harry Mason vs Zafina | 78–63 | 55.32% |
| Harry Mason vs Jun | 71–69 | 50.71% |
| Harry Mason vs Victor | 51–88 | 36.69% |
| Harry Mason vs Paul | 88–47 | 65.19% |
| Harry Mason vs Azucena | 55–80 | 40.74% |
| Harry Mason vs Eddy | 66–67 | 49.62% |
| Harry Mason vs Nina | 69–62 | 52.67% |
| Harry Mason vs Dragunov | 65–65 | 50.00% |
| Harry Mason vs Leo | 71–58 | 55.04% |
| Harry Mason vs Feng | 62–65 | 48.82% |
| Harry Mason vs Jack-8 | 61–62 | 49.59% |
| Harry Mason vs Lee | 80–43 | 65.04% |
| Harry Mason vs Leroy | 57–61 | 48.31% |
| Harry Mason vs Raven | 72–46 | 61.02% |
| Harry Mason vs Asuka | 53–52 | 50.48% |
| Harry Mason vs Heihachi | 44–48 | 47.83% |
| Harry Mason vs Clive | 40–51 | 43.96% |
| Harry Mason vs Claudio | 42–38 | 52.50% |
| Harry Mason vs Alisa | 42–37 | 53.16% |
| Harry Mason vs Lidia | 27–52 | 34.18% |
| Harry Mason vs Kuma | 43–30 | 58.90% |
| Harry Mason vs Shaheen | 34–19 | 64.15% |
| Harry Mason vs Panda | 17–12 | 58.62% |
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.