| Piper vs Armor King | 21–25 | 45.65% |
| Piper vs King | 8–26 | 23.53% |
| Piper vs Reina | 10–17 | 37.04% |
| Piper vs Law | 8–16 | 33.33% |
| Piper vs Steve | 5–17 | 22.73% |
| Piper vs Dragunov | 4–15 | 21.05% |
| Piper vs Kazuya | 5–13 | 27.78% |
| Piper vs Lili | 5–13 | 27.78% |
| Piper vs Hwoarang | 6–9 | 40.00% |
| Piper vs Eddy | 2–12 | 14.29% |
| Piper vs Lidia | 3–11 | 21.43% |
| Piper vs Yoshimitsu | 5–6 | 45.45% |
| Piper vs Lars | 6–5 | 54.55% |
| Piper vs Clive | 2–8 | 20.00% |
| Piper vs Fahkumram | 5–4 | 55.56% |
| Piper vs Jin | 3–5 | 37.50% |
| Piper vs Asuka | 5–3 | 62.50% |
| Piper vs Nina | 4–4 | 50.00% |
| Piper vs Jun | 3–5 | 37.50% |
| Piper vs Victor | 3–5 | 37.50% |
| Piper vs Xiaoyu | 3–4 | 42.86% |
| Piper vs Bryan | 1–6 | 14.29% |
| Piper vs Feng | 2–5 | 28.57% |
| Piper vs Miary Zo | 1–6 | 14.29% |
| Piper vs Alisa | 1–5 | 16.67% |
| Piper vs Lee | 6–0 | 100.00% |
| Piper vs Leroy | 2–4 | 33.33% |
| Piper vs Azucena | 2–3 | 40.00% |
| Piper vs Jack-8 | 0–4 | 0.00% |
| Piper vs Shaheen | 3–1 | 75.00% |
| Piper vs Kuma | 2–2 | 50.00% |
| Piper vs Leo | 1–2 | 33.33% |
| Piper vs Heihachi | 2–1 | 66.67% |
| Piper vs Anna | 0–3 | 0.00% |
| Piper vs Devil Jin | 0–2 | 0.00% |
| Piper vs Zafina | 2–0 | 100.00% |
| Piper vs Paul | 1–0 | 100.00% |
| Piper vs Claudio | 0–1 | 0.00% |
| Piper vs Raven | 0–1 | 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.