| Gekko vs Miary Zo | 9–12 | 42.86% |
| Gekko vs Hwoarang | 12–8 | 60.00% |
| Gekko vs Jin | 11–9 | 55.00% |
| Gekko vs Steve | 10–5 | 66.67% |
| Gekko vs Dragunov | 7–8 | 46.67% |
| Gekko vs Lili | 8–5 | 61.54% |
| Gekko vs Law | 7–5 | 58.33% |
| Gekko vs Bryan | 7–4 | 63.64% |
| Gekko vs King | 6–4 | 60.00% |
| Gekko vs Reina | 6–3 | 66.67% |
| Gekko vs Victor | 3–6 | 33.33% |
| Gekko vs Clive | 5–4 | 55.56% |
| Gekko vs Nina | 3–5 | 37.50% |
| Gekko vs Eddy | 3–5 | 37.50% |
| Gekko vs Armor King | 6–2 | 75.00% |
| Gekko vs Heihachi | 2–5 | 28.57% |
| Gekko vs Yoshimitsu | 3–3 | 50.00% |
| Gekko vs Feng | 2–4 | 33.33% |
| Gekko vs Anna | 1–5 | 16.67% |
| Gekko vs Asuka | 5–0 | 100.00% |
| Gekko vs Lee | 4–1 | 80.00% |
| Gekko vs Xiaoyu | 2–2 | 50.00% |
| Gekko vs Alisa | 1–3 | 25.00% |
| Gekko vs Lidia | 2–2 | 50.00% |
| Gekko vs Fahkumram | 2–2 | 50.00% |
| Gekko vs Leroy | 2–1 | 66.67% |
| Gekko vs Jun | 0–3 | 0.00% |
| Gekko vs Paul | 2–0 | 100.00% |
| Gekko vs Kazuya | 0–2 | 0.00% |
| Gekko vs Lars | 1–1 | 50.00% |
| Gekko vs Panda | 2–0 | 100.00% |
| Gekko vs Azucena | 2–0 | 100.00% |
| Gekko vs Devil Jin | 1–0 | 100.00% |
| Gekko vs Claudio | 0–1 | 0.00% |
| Gekko vs Shaheen | 0–1 | 0.00% |
| Gekko vs Raven | 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.