| Marshmelly vs Kazuya | 128–103 | 55.41% |
| Marshmelly vs Reina | 68–91 | 42.77% |
| Marshmelly vs Jin | 61–96 | 38.85% |
| Marshmelly vs King | 70–81 | 46.36% |
| Marshmelly vs Bryan | 62–66 | 48.44% |
| Marshmelly vs Steve | 61–54 | 53.04% |
| Marshmelly vs Hwoarang | 56–58 | 49.12% |
| Marshmelly vs Yoshimitsu | 46–59 | 43.81% |
| Marshmelly vs Paul | 39–54 | 41.94% |
| Marshmelly vs Lili | 41–47 | 46.59% |
| Marshmelly vs Dragunov | 49–35 | 58.33% |
| Marshmelly vs Jun | 37–43 | 46.25% |
| Marshmelly vs Law | 35–43 | 44.87% |
| Marshmelly vs Devil Jin | 27–40 | 40.30% |
| Marshmelly vs Heihachi | 25–41 | 37.88% |
| Marshmelly vs Xiaoyu | 28–22 | 56.00% |
| Marshmelly vs Lee | 29–19 | 60.42% |
| Marshmelly vs Feng | 23–21 | 52.27% |
| Marshmelly vs Azucena | 28–15 | 65.12% |
| Marshmelly vs Nina | 21–17 | 55.26% |
| Marshmelly vs Eddy | 14–24 | 36.84% |
| Marshmelly vs Clive | 16–22 | 42.11% |
| Marshmelly vs Alisa | 9–27 | 25.00% |
| Marshmelly vs Victor | 16–18 | 47.06% |
| Marshmelly vs Lars | 10–22 | 31.25% |
| Marshmelly vs Lidia | 10–22 | 31.25% |
| Marshmelly vs Jack-8 | 17–14 | 54.84% |
| Marshmelly vs Asuka | 15–16 | 48.39% |
| Marshmelly vs Leroy | 16–13 | 55.17% |
| Marshmelly vs Anna | 14–15 | 48.28% |
| Marshmelly vs Claudio | 13–14 | 48.15% |
| Marshmelly vs Leo | 13–13 | 50.00% |
| Marshmelly vs Raven | 8–14 | 36.36% |
| Marshmelly vs Fahkumram | 14–7 | 66.67% |
| Marshmelly vs Armor King | 6–11 | 35.29% |
| Marshmelly vs Kuma | 3–7 | 30.00% |
| Marshmelly vs Zafina | 5–5 | 50.00% |
| Marshmelly vs Shaheen | 4–4 | 50.00% |
| Marshmelly vs Panda | 2–3 | 40.00% |
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.