| Gecko vs Hwoarang | 3–12 | 20.00% |
| Gecko vs Law | 5–7 | 41.67% |
| Gecko vs Kazuya | 6–6 | 50.00% |
| Gecko vs Reina | 4–8 | 33.33% |
| Gecko vs Dragunov | 6–5 | 54.55% |
| Gecko vs Heihachi | 2–9 | 18.18% |
| Gecko vs King | 1–8 | 11.11% |
| Gecko vs Yoshimitsu | 4–5 | 44.44% |
| Gecko vs Azucena | 3–5 | 37.50% |
| Gecko vs Bryan | 1–6 | 14.29% |
| Gecko vs Victor | 1–6 | 14.29% |
| Gecko vs Jin | 2–4 | 33.33% |
| Gecko vs Lili | 2–4 | 33.33% |
| Gecko vs Nina | 0–6 | 0.00% |
| Gecko vs Lidia | 3–2 | 60.00% |
| Gecko vs Paul | 2–2 | 50.00% |
| Gecko vs Jun | 2–2 | 50.00% |
| Gecko vs Asuka | 0–3 | 0.00% |
| Gecko vs Steve | 0–2 | 0.00% |
| Gecko vs Claudio | 2–0 | 100.00% |
| Gecko vs Leroy | 2–0 | 100.00% |
| Gecko vs Leo | 1–0 | 100.00% |
| Gecko vs Lee | 0–1 | 0.00% |
| Gecko vs Panda | 0–1 | 0.00% |
| Gecko vs Eddy | 1–0 | 100.00% |
| Gecko vs Fahkumram | 0–1 | 0.00% |
| Gecko vs Armor King | 0–1 | 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.