| Yamandowski vs Reina | 10–5 | 66.67% |
| Yamandowski vs Kazuya | 4–7 | 36.36% |
| Yamandowski vs King | 5–5 | 50.00% |
| Yamandowski vs Jin | 5–5 | 50.00% |
| Yamandowski vs Lars | 3–6 | 33.33% |
| Yamandowski vs Law | 3–3 | 50.00% |
| Yamandowski vs Hwoarang | 3–3 | 50.00% |
| Yamandowski vs Steve | 2–4 | 33.33% |
| Yamandowski vs Dragunov | 3–3 | 50.00% |
| Yamandowski vs Lili | 4–1 | 80.00% |
| Yamandowski vs Alisa | 1–4 | 20.00% |
| Yamandowski vs Jun | 3–2 | 60.00% |
| Yamandowski vs Lidia | 4–1 | 80.00% |
| Yamandowski vs Heihachi | 4–1 | 80.00% |
| Yamandowski vs Clive | 3–2 | 60.00% |
| Yamandowski vs Claudio | 3–1 | 75.00% |
| Yamandowski vs Lee | 2–2 | 50.00% |
| Yamandowski vs Paul | 1–2 | 33.33% |
| Yamandowski vs Feng | 0–3 | 0.00% |
| Yamandowski vs Yoshimitsu | 0–2 | 0.00% |
| Yamandowski vs Xiaoyu | 2–0 | 100.00% |
| Yamandowski vs Devil Jin | 2–0 | 100.00% |
| Yamandowski vs Shaheen | 0–2 | 0.00% |
| Yamandowski vs Raven | 0–2 | 0.00% |
| Yamandowski vs Bryan | 0–1 | 0.00% |
| Yamandowski vs Asuka | 0–1 | 0.00% |
| Yamandowski vs Leo | 1–0 | 100.00% |
| Yamandowski vs Nina | 0–1 | 0.00% |
| Yamandowski vs Victor | 1–0 | 100.00% |
| Yamandowski vs Eddy | 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.