| Melodic Keys vs King | 35–39 | 47.30% |
| Melodic Keys vs Hwoarang | 38–29 | 56.72% |
| Melodic Keys vs Kazuya | 40–16 | 71.43% |
| Melodic Keys vs Reina | 33–16 | 67.35% |
| Melodic Keys vs Steve | 30–8 | 78.95% |
| Melodic Keys vs Jin | 17–18 | 48.57% |
| Melodic Keys vs Lars | 14–20 | 41.18% |
| Melodic Keys vs Bryan | 16–17 | 48.48% |
| Melodic Keys vs Eddy | 13–20 | 39.39% |
| Melodic Keys vs Law | 16–15 | 51.61% |
| Melodic Keys vs Victor | 15–15 | 50.00% |
| Melodic Keys vs Lili | 13–16 | 44.83% |
| Melodic Keys vs Lee | 15–12 | 55.56% |
| Melodic Keys vs Yoshimitsu | 12–14 | 46.15% |
| Melodic Keys vs Azucena | 12–14 | 46.15% |
| Melodic Keys vs Heihachi | 15–9 | 62.50% |
| Melodic Keys vs Asuka | 13–8 | 61.90% |
| Melodic Keys vs Devil Jin | 7–13 | 35.00% |
| Melodic Keys vs Xiaoyu | 11–7 | 61.11% |
| Melodic Keys vs Dragunov | 10–8 | 55.56% |
| Melodic Keys vs Leroy | 10–8 | 55.56% |
| Melodic Keys vs Alisa | 7–10 | 41.18% |
| Melodic Keys vs Lidia | 11–6 | 64.71% |
| Melodic Keys vs Jun | 5–11 | 31.25% |
| Melodic Keys vs Raven | 10–5 | 66.67% |
| Melodic Keys vs Leo | 6–8 | 42.86% |
| Melodic Keys vs Nina | 9–5 | 64.29% |
| Melodic Keys vs Paul | 6–7 | 46.15% |
| Melodic Keys vs Feng | 8–5 | 61.54% |
| Melodic Keys vs Kuma | 3–10 | 23.08% |
| Melodic Keys vs Jack-8 | 4–8 | 33.33% |
| Melodic Keys vs Zafina | 5–6 | 45.45% |
| Melodic Keys vs Claudio | 4–5 | 44.44% |
| Melodic Keys vs Shaheen | 1–4 | 20.00% |
| Melodic Keys vs Anna | 1–4 | 20.00% |
| Melodic Keys vs Armor King | 4–1 | 80.00% |
| Melodic Keys vs Clive | 1–3 | 25.00% |
| Melodic Keys vs Fahkumram | 2–2 | 50.00% |
| Melodic Keys vs Panda | 2–1 | 66.67% |
| Melodic Keys vs Miary Zo | 1–2 | 33.33% |
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.