| Santos vs Kazuya | 8–20 | 28.57% |
| Santos vs King | 15–12 | 55.56% |
| Santos vs Jun | 7–19 | 26.92% |
| Santos vs Steve | 13–12 | 52.00% |
| Santos vs Bryan | 9–14 | 39.13% |
| Santos vs Azucena | 14–8 | 63.64% |
| Santos vs Law | 10–11 | 47.62% |
| Santos vs Heihachi | 11–9 | 55.00% |
| Santos vs Asuka | 11–7 | 61.11% |
| Santos vs Yoshimitsu | 5–11 | 31.25% |
| Santos vs Lili | 7–8 | 46.67% |
| Santos vs Jin | 5–9 | 35.71% |
| Santos vs Dragunov | 5–9 | 35.71% |
| Santos vs Hwoarang | 6–7 | 46.15% |
| Santos vs Leroy | 7–6 | 53.85% |
| Santos vs Xiaoyu | 10–1 | 90.91% |
| Santos vs Eddy | 3–8 | 27.27% |
| Santos vs Clive | 10–1 | 90.91% |
| Santos vs Paul | 1–7 | 12.50% |
| Santos vs Jack-8 | 4–4 | 50.00% |
| Santos vs Lidia | 3–5 | 37.50% |
| Santos vs Anna | 4–4 | 50.00% |
| Santos vs Kuma | 1–6 | 14.29% |
| Santos vs Raven | 7–0 | 100.00% |
| Santos vs Devil Jin | 1–5 | 16.67% |
| Santos vs Leo | 4–2 | 66.67% |
| Santos vs Zafina | 4–2 | 66.67% |
| Santos vs Lars | 3–2 | 60.00% |
| Santos vs Alisa | 1–4 | 20.00% |
| Santos vs Claudio | 2–3 | 40.00% |
| Santos vs Victor | 4–1 | 80.00% |
| Santos vs Reina | 2–2 | 50.00% |
| Santos vs Miary Zo | 1–3 | 25.00% |
| Santos vs Feng | 2–1 | 66.67% |
| Santos vs Nina | 0–2 | 0.00% |
| Santos vs Fahkumram | 0–2 | 0.00% |
| Santos vs Shaheen | 1–0 | 100.00% |
| Santos vs Armor King | 1–0 | 100.00% |
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.