| Gecko vs Kazuya | 142–54 | 72.45% |
| Gecko vs Jin | 95–59 | 61.69% |
| Gecko vs Bryan | 106–37 | 74.13% |
| Gecko vs Dragunov | 65–28 | 69.89% |
| Gecko vs Reina | 47–42 | 52.81% |
| Gecko vs Steve | 44–33 | 57.14% |
| Gecko vs Lee | 49–25 | 66.22% |
| Gecko vs Paul | 56–17 | 76.71% |
| Gecko vs King | 55–18 | 75.34% |
| Gecko vs Yoshimitsu | 42–26 | 61.76% |
| Gecko vs Law | 54–12 | 81.82% |
| Gecko vs Hwoarang | 41–22 | 65.08% |
| Gecko vs Feng | 40–21 | 65.57% |
| Gecko vs Heihachi | 31–30 | 50.82% |
| Gecko vs Victor | 39–21 | 65.00% |
| Gecko vs Azucena | 32–24 | 57.14% |
| Gecko vs Jun | 35–19 | 64.81% |
| Gecko vs Devil Jin | 34–19 | 64.15% |
| Gecko vs Lidia | 28–23 | 54.90% |
| Gecko vs Claudio | 31–18 | 63.27% |
| Gecko vs Lili | 40–8 | 83.33% |
| Gecko vs Leroy | 31–15 | 67.39% |
| Gecko vs Asuka | 32–12 | 72.73% |
| Gecko vs Nina | 26–16 | 61.90% |
| Gecko vs Eddy | 23–15 | 60.53% |
| Gecko vs Alisa | 24–9 | 72.73% |
| Gecko vs Xiaoyu | 17–14 | 54.84% |
| Gecko vs Lars | 21–9 | 70.00% |
| Gecko vs Raven | 22–8 | 73.33% |
| Gecko vs Leo | 18–10 | 64.29% |
| Gecko vs Jack-8 | 18–9 | 66.67% |
| Gecko vs Shaheen | 19–8 | 70.37% |
| Gecko vs Zafina | 17–5 | 77.27% |
| Gecko vs Kuma | 12–7 | 63.16% |
| Gecko vs Panda | 9–3 | 75.00% |
| Gecko vs Clive | 1–4 | 20.00% |
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.