| Eftihios vs Kazuya | 141–166 | 45.93% |
| Eftihios vs Jin | 123–139 | 46.95% |
| Eftihios vs King | 117–143 | 45.00% |
| Eftihios vs Law | 101–96 | 51.27% |
| Eftihios vs Bryan | 65–100 | 39.39% |
| Eftihios vs Heihachi | 64–100 | 39.02% |
| Eftihios vs Steve | 86–70 | 55.13% |
| Eftihios vs Reina | 64–92 | 41.03% |
| Eftihios vs Lili | 83–72 | 53.55% |
| Eftihios vs Dragunov | 71–84 | 45.81% |
| Eftihios vs Hwoarang | 62–63 | 49.60% |
| Eftihios vs Yoshimitsu | 47–58–1 | 44.76% |
| Eftihios vs Eddy | 53–52 | 50.48% |
| Eftihios vs Fahkumram | 42–60 | 41.18% |
| Eftihios vs Jun | 35–44 | 44.30% |
| Eftihios vs Paul | 42–36 | 53.85% |
| Eftihios vs Asuka | 35–43 | 44.87% |
| Eftihios vs Nina | 27–49 | 35.53% |
| Eftihios vs Azucena | 35–40 | 46.67% |
| Eftihios vs Devil Jin | 31–42 | 42.47% |
| Eftihios vs Victor | 23–49 | 31.94% |
| Eftihios vs Armor King | 28–42 | 40.00% |
| Eftihios vs Lars | 24–34 | 41.38% |
| Eftihios vs Clive | 27–28 | 49.09% |
| Eftihios vs Alisa | 15–37 | 28.85% |
| Eftihios vs Feng | 21–25 | 45.65% |
| Eftihios vs Lidia | 17–29 | 36.96% |
| Eftihios vs Lee | 20–25 | 44.44% |
| Eftihios vs Anna | 21–23 | 47.73% |
| Eftihios vs Xiaoyu | 22–20 | 52.38% |
| Eftihios vs Claudio | 16–17 | 48.48% |
| Eftihios vs Jack-8 | 19–13 | 59.38% |
| Eftihios vs Leroy | 15–17 | 46.88% |
| Eftihios vs Leo | 19–11 | 63.33% |
| Eftihios vs Kuma | 6–19 | 24.00% |
| Eftihios vs Zafina | 9–16 | 36.00% |
| Eftihios vs Raven | 8–13 | 38.10% |
| Eftihios vs Shaheen | 9–6 | 60.00% |
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.