| Harmonica vs Kazuya | 82–47 | 63.57% |
| Harmonica vs Dragunov | 71–45 | 61.21% |
| Harmonica vs Jin | 70–41 | 63.06% |
| Harmonica vs Bryan | 55–41 | 57.29% |
| Harmonica vs King | 47–32 | 59.49% |
| Harmonica vs Yoshimitsu | 38–32 | 54.29% |
| Harmonica vs Hwoarang | 46–24 | 65.71% |
| Harmonica vs Steve | 43–26 | 62.32% |
| Harmonica vs Heihachi | 34–29 | 53.97% |
| Harmonica vs Xiaoyu | 44–18 | 70.97% |
| Harmonica vs Leo | 34–28 | 54.84% |
| Harmonica vs Reina | 40–22 | 64.52% |
| Harmonica vs Armor King | 31–30 | 50.82% |
| Harmonica vs Law | 35–24 | 59.32% |
| Harmonica vs Raven | 39–19 | 67.24% |
| Harmonica vs Lars | 23–33 | 41.07% |
| Harmonica vs Lee | 28–26–1 | 51.85% |
| Harmonica vs Feng | 31–23 | 57.41% |
| Harmonica vs Asuka | 31–22 | 58.49% |
| Harmonica vs Devil Jin | 31–21 | 59.62% |
| Harmonica vs Lili | 28–22 | 56.00% |
| Harmonica vs Zafina | 31–18 | 63.27% |
| Harmonica vs Jack-8 | 23–22 | 51.11% |
| Harmonica vs Nina | 24–19 | 55.81% |
| Harmonica vs Claudio | 26–15 | 63.41% |
| Harmonica vs Jun | 26–14 | 65.00% |
| Harmonica vs Azucena | 23–15 | 60.53% |
| Harmonica vs Leroy | 18–17 | 51.43% |
| Harmonica vs Alisa | 20–12 | 62.50% |
| Harmonica vs Victor | 18–14 | 56.25% |
| Harmonica vs Shaheen | 17–13 | 56.67% |
| Harmonica vs Paul | 17–12 | 58.62% |
| Harmonica vs Clive | 11–18 | 37.93% |
| Harmonica vs Fahkumram | 13–15 | 46.43% |
| Harmonica vs Anna | 13–13 | 50.00% |
| Harmonica vs Eddy | 15–8 | 65.22% |
| Harmonica vs Kuma | 11–11 | 50.00% |
| Harmonica vs Lidia | 7–12 | 36.84% |
| Harmonica vs Panda | 10–4 | 71.43% |
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.