| Oldmanonsteroid vs Steve | 142–119 | 54.41% |
| Oldmanonsteroid vs Hwoarang | 130–103 | 55.79% |
| Oldmanonsteroid vs King | 112–104 | 51.85% |
| Oldmanonsteroid vs Kazuya | 115–92 | 55.56% |
| Oldmanonsteroid vs Law | 107–96 | 52.71% |
| Oldmanonsteroid vs Jin | 107–85 | 55.73% |
| Oldmanonsteroid vs Lars | 95–80 | 54.29% |
| Oldmanonsteroid vs Lili | 77–84 | 47.83% |
| Oldmanonsteroid vs Bryan | 82–70 | 53.95% |
| Oldmanonsteroid vs Paul | 62–81 | 43.36% |
| Oldmanonsteroid vs Yoshimitsu | 71–66 | 51.82% |
| Oldmanonsteroid vs Azucena | 65–58 | 52.85% |
| Oldmanonsteroid vs Lee | 68–54 | 55.74% |
| Oldmanonsteroid vs Devil Jin | 67–51 | 56.78% |
| Oldmanonsteroid vs Heihachi | 61–55 | 52.59% |
| Oldmanonsteroid vs Dragunov | 58–55 | 51.33% |
| Oldmanonsteroid vs Feng | 64–45 | 58.72% |
| Oldmanonsteroid vs Jun | 61–47 | 56.48% |
| Oldmanonsteroid vs Alisa | 63–37 | 63.00% |
| Oldmanonsteroid vs Victor | 48–52 | 48.00% |
| Oldmanonsteroid vs Lidia | 55–45 | 55.00% |
| Oldmanonsteroid vs Reina | 55–43 | 56.12% |
| Oldmanonsteroid vs Nina | 56–40 | 58.33% |
| Oldmanonsteroid vs Leroy | 43–48 | 47.25% |
| Oldmanonsteroid vs Raven | 35–53 | 39.77% |
| Oldmanonsteroid vs Anna | 52–34 | 60.47% |
| Oldmanonsteroid vs Asuka | 46–39 | 54.12% |
| Oldmanonsteroid vs Eddy | 48–34 | 58.54% |
| Oldmanonsteroid vs Leo | 38–42 | 47.50% |
| Oldmanonsteroid vs Claudio | 31–48 | 39.24% |
| Oldmanonsteroid vs Jack-8 | 31–45 | 40.79% |
| Oldmanonsteroid vs Shaheen | 34–40 | 45.95% |
| Oldmanonsteroid vs Xiaoyu | 33–35 | 48.53% |
| Oldmanonsteroid vs Clive | 39–23 | 62.90% |
| Oldmanonsteroid vs Zafina | 27–30 | 47.37% |
| Oldmanonsteroid vs Kuma | 18–21 | 46.15% |
| Oldmanonsteroid vs Panda | 12–10 | 54.55% |
| Oldmanonsteroid vs Fahkumram | 15–7 | 68.18% |
| Oldmanonsteroid vs Armor King | 8–10 | 44.44% |
| Oldmanonsteroid vs Miary Zo | 6–10 | 37.50% |
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.