| Gecko vs Kazuya | 70–60 | 53.85% |
| Gecko vs Jin | 52–51 | 50.49% |
| Gecko vs Hwoarang | 41–53 | 43.62% |
| Gecko vs Bryan | 44–46 | 48.89% |
| Gecko vs Reina | 49–32 | 60.49% |
| Gecko vs Heihachi | 37–40 | 48.05% |
| Gecko vs King | 40–36 | 52.63% |
| Gecko vs Law | 31–44 | 41.33% |
| Gecko vs Lili | 34–29 | 53.97% |
| Gecko vs Yoshimitsu | 30–32 | 48.39% |
| Gecko vs Dragunov | 32–28 | 53.33% |
| Gecko vs Lee | 30–30 | 50.00% |
| Gecko vs Paul | 19–39 | 32.76% |
| Gecko vs Devil Jin | 23–27 | 46.00% |
| Gecko vs Asuka | 25–24 | 51.02% |
| Gecko vs Steve | 24–24 | 50.00% |
| Gecko vs Armor King | 15–22 | 40.54% |
| Gecko vs Nina | 13–22 | 37.14% |
| Gecko vs Jun | 16–15 | 51.61% |
| Gecko vs Lars | 13–15 | 46.43% |
| Gecko vs Claudio | 10–18 | 35.71% |
| Gecko vs Lidia | 12–15 | 44.44% |
| Gecko vs Xiaoyu | 9–14 | 39.13% |
| Gecko vs Alisa | 14–9 | 60.87% |
| Gecko vs Feng | 13–9 | 59.09% |
| Gecko vs Fahkumram | 5–17 | 22.73% |
| Gecko vs Jack-8 | 9–11 | 45.00% |
| Gecko vs Azucena | 7–12 | 36.84% |
| Gecko vs Kuma | 9–9 | 50.00% |
| Gecko vs Eddy | 10–7 | 58.82% |
| Gecko vs Leo | 6–10 | 37.50% |
| Gecko vs Raven | 9–7 | 56.25% |
| Gecko vs Zafina | 10–5 | 66.67% |
| Gecko vs Victor | 10–5 | 66.67% |
| Gecko vs Leroy | 6–4 | 60.00% |
| Gecko vs Anna | 8–2 | 80.00% |
| Gecko vs Panda | 2–4 | 33.33% |
| Gecko vs Clive | 4–0 | 100.00% |
| Gecko vs Shaheen | 0–3 | 0.00% |
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.