| Old_School_SAP9 vs King | 50–56 | 47.17% |
| Old_School_SAP9 vs Reina | 40–45 | 47.06% |
| Old_School_SAP9 vs Steve | 46–23 | 66.67% |
| Old_School_SAP9 vs Eddy | 17–52 | 24.64% |
| Old_School_SAP9 vs Hwoarang | 24–41 | 36.92% |
| Old_School_SAP9 vs Jin | 22–38 | 36.67% |
| Old_School_SAP9 vs Kazuya | 28–32 | 46.67% |
| Old_School_SAP9 vs Law | 19–26 | 42.22% |
| Old_School_SAP9 vs Lili | 26–16 | 61.90% |
| Old_School_SAP9 vs Azucena | 25–15 | 62.50% |
| Old_School_SAP9 vs Lars | 13–26 | 33.33% |
| Old_School_SAP9 vs Victor | 12–27 | 30.77% |
| Old_School_SAP9 vs Bryan | 19–17 | 52.78% |
| Old_School_SAP9 vs Paul | 8–27 | 22.86% |
| Old_School_SAP9 vs Lidia | 18–14 | 56.25% |
| Old_School_SAP9 vs Xiaoyu | 13–17 | 43.33% |
| Old_School_SAP9 vs Asuka | 9–20 | 31.03% |
| Old_School_SAP9 vs Feng | 11–17 | 39.29% |
| Old_School_SAP9 vs Jun | 15–12 | 55.56% |
| Old_School_SAP9 vs Lee | 12–14 | 46.15% |
| Old_School_SAP9 vs Yoshimitsu | 13–12 | 52.00% |
| Old_School_SAP9 vs Devil Jin | 10–15 | 40.00% |
| Old_School_SAP9 vs Dragunov | 10–15 | 40.00% |
| Old_School_SAP9 vs Nina | 7–17 | 29.17% |
| Old_School_SAP9 vs Raven | 16–6 | 72.73% |
| Old_School_SAP9 vs Alisa | 5–15 | 25.00% |
| Old_School_SAP9 vs Kuma | 8–11 | 42.11% |
| Old_School_SAP9 vs Jack-8 | 9–8 | 52.94% |
| Old_School_SAP9 vs Fahkumram | 2–14 | 12.50% |
| Old_School_SAP9 vs Leroy | 7–7 | 50.00% |
| Old_School_SAP9 vs Clive | 8–6 | 57.14% |
| Old_School_SAP9 vs Zafina | 4–9 | 30.77% |
| Old_School_SAP9 vs Heihachi | 8–4 | 66.67% |
| Old_School_SAP9 vs Shaheen | 6–5 | 54.55% |
| Old_School_SAP9 vs Leo | 8–2 | 80.00% |
| Old_School_SAP9 vs Claudio | 1–7 | 12.50% |
| Old_School_SAP9 vs Anna | 4–4 | 50.00% |
| Old_School_SAP9 vs Armor King | 1–2 | 33.33% |
| Old_School_SAP9 vs Panda | 0–2 | 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.