| Mercy vs Kazuya | 55–45 | 55.00% |
| Mercy vs Dragunov | 59–39 | 60.20% |
| Mercy vs Jin | 52–41 | 55.91% |
| Mercy vs Bryan | 53–27 | 66.25% |
| Mercy vs Hwoarang | 40–38 | 51.28% |
| Mercy vs Paul | 44–25 | 63.77% |
| Mercy vs Lidia | 31–38 | 44.93% |
| Mercy vs Reina | 37–28 | 56.92% |
| Mercy vs Asuka | 40–20 | 66.67% |
| Mercy vs Victor | 31–25 | 55.36% |
| Mercy vs Feng | 36–16 | 69.23% |
| Mercy vs King | 32–18 | 64.00% |
| Mercy vs Lee | 32–14 | 69.57% |
| Mercy vs Jun | 29–16 | 64.44% |
| Mercy vs Jack-8 | 23–18 | 56.10% |
| Mercy vs Devil Jin | 26–15 | 63.41% |
| Mercy vs Nina | 25–16 | 60.98% |
| Mercy vs Yoshimitsu | 30–10 | 75.00% |
| Mercy vs Azucena | 24–16 | 60.00% |
| Mercy vs Steve | 25–12 | 67.57% |
| Mercy vs Law | 19–17 | 52.78% |
| Mercy vs Lili | 19–17 | 52.78% |
| Mercy vs Shaheen | 18–17 | 51.43% |
| Mercy vs Leo | 22–10 | 68.75% |
| Mercy vs Claudio | 18–14 | 56.25% |
| Mercy vs Clive | 10–14 | 41.67% |
| Mercy vs Xiaoyu | 14–9 | 60.87% |
| Mercy vs Leroy | 8–14 | 36.36% |
| Mercy vs Lars | 12–9 | 57.14% |
| Mercy vs Eddy | 14–7 | 66.67% |
| Mercy vs Kuma | 11–8 | 57.89% |
| Mercy vs Alisa | 11–7 | 61.11% |
| Mercy vs Panda | 10–7 | 58.82% |
| Mercy vs Raven | 7–9 | 43.75% |
| Mercy vs Heihachi | 8–5 | 61.54% |
| Mercy vs Zafina | 5–4 | 55.56% |
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.