| Squirtle vs Reina | 70–32 | 68.63% |
| Squirtle vs King | 42–46 | 47.73% |
| Squirtle vs Kazuya | 40–32 | 55.56% |
| Squirtle vs Steve | 24–43 | 35.82% |
| Squirtle vs Jin | 33–32 | 50.77% |
| Squirtle vs Hwoarang | 27–37 | 42.19% |
| Squirtle vs Bryan | 26–36 | 41.94% |
| Squirtle vs Azucena | 35–25 | 58.33% |
| Squirtle vs Lars | 24–30 | 44.44% |
| Squirtle vs Dragunov | 23–28 | 45.10% |
| Squirtle vs Paul | 20–29 | 40.82% |
| Squirtle vs Lee | 25–23 | 52.08% |
| Squirtle vs Lili | 24–22 | 52.17% |
| Squirtle vs Law | 19–24 | 44.19% |
| Squirtle vs Feng | 20–22 | 47.62% |
| Squirtle vs Yoshimitsu | 21–18 | 53.85% |
| Squirtle vs Alisa | 22–17 | 56.41% |
| Squirtle vs Victor | 20–19 | 51.28% |
| Squirtle vs Jack-8 | 15–23 | 39.47% |
| Squirtle vs Jun | 21–14 | 60.00% |
| Squirtle vs Kuma | 15–17 | 46.88% |
| Squirtle vs Nina | 14–15 | 48.28% |
| Squirtle vs Eddy | 11–13 | 45.83% |
| Squirtle vs Devil Jin | 11–10 | 52.38% |
| Squirtle vs Claudio | 12–9 | 57.14% |
| Squirtle vs Raven | 10–11 | 47.62% |
| Squirtle vs Leo | 10–9 | 52.63% |
| Squirtle vs Asuka | 8–10 | 44.44% |
| Squirtle vs Leroy | 7–5 | 58.33% |
| Squirtle vs Xiaoyu | 6–5 | 54.55% |
| Squirtle vs Zafina | 3–4 | 42.86% |
| Squirtle vs Shaheen | 0–3 | 0.00% |
| Squirtle vs Lidia | 0–2 | 0.00% |
| Squirtle vs Panda | 1–0 | 100.00% |
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.