| Santos vs Reina | 9–7 | 56.25% |
| Santos vs Kazuya | 7–6 | 53.85% |
| Santos vs Hwoarang | 4–8 | 33.33% |
| Santos vs Bryan | 3–8 | 27.27% |
| Santos vs Miary Zo | 1–9 | 10.00% |
| Santos vs Paul | 5–4 | 55.56% |
| Santos vs King | 2–7 | 22.22% |
| Santos vs Eddy | 5–3 | 62.50% |
| Santos vs Yoshimitsu | 3–4 | 42.86% |
| Santos vs Nina | 2–5 | 28.57% |
| Santos vs Asuka | 2–3 | 40.00% |
| Santos vs Devil Jin | 2–3 | 40.00% |
| Santos vs Jun | 4–1 | 80.00% |
| Santos vs Law | 2–2 | 50.00% |
| Santos vs Lili | 0–4 | 0.00% |
| Santos vs Leo | 2–2 | 50.00% |
| Santos vs Lee | 2–2 | 50.00% |
| Santos vs Azucena | 0–4 | 0.00% |
| Santos vs Clive | 0–4 | 0.00% |
| Santos vs Jin | 1–2 | 33.33% |
| Santos vs Lars | 0–3 | 0.00% |
| Santos vs Leroy | 2–1 | 66.67% |
| Santos vs Victor | 1–2 | 33.33% |
| Santos vs Xiaoyu | 2–0 | 100.00% |
| Santos vs Steve | 0–2 | 0.00% |
| Santos vs Feng | 2–0 | 100.00% |
| Santos vs Kuma | 2–0 | 100.00% |
| Santos vs Raven | 2–0 | 100.00% |
| Santos vs Dragunov | 0–1 | 0.00% |
| Santos vs Claudio | 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.