| Napier vs Kazuya | 21–22 | 48.84% |
| Napier vs Hwoarang | 25–14 | 64.10% |
| Napier vs Jin | 20–15 | 57.14% |
| Napier vs Reina | 17–14 | 54.84% |
| Napier vs Lee | 13–12 | 52.00% |
| Napier vs Yoshimitsu | 12–12 | 50.00% |
| Napier vs Paul | 11–12 | 47.83% |
| Napier vs King | 11–10 | 52.38% |
| Napier vs Nina | 6–11 | 35.29% |
| Napier vs Heihachi | 12–5 | 70.59% |
| Napier vs Lili | 6–10 | 37.50% |
| Napier vs Dragunov | 6–9 | 40.00% |
| Napier vs Asuka | 8–5 | 61.54% |
| Napier vs Bryan | 7–5 | 58.33% |
| Napier vs Devil Jin | 5–7 | 41.67% |
| Napier vs Feng | 8–4 | 66.67% |
| Napier vs Lars | 5–7 | 41.67% |
| Napier vs Jun | 3–9 | 25.00% |
| Napier vs Claudio | 6–5 | 54.55% |
| Napier vs Law | 2–8 | 20.00% |
| Napier vs Leo | 4–5 | 44.44% |
| Napier vs Eddy | 3–6 | 33.33% |
| Napier vs Xiaoyu | 5–3 | 62.50% |
| Napier vs Steve | 4–3 | 57.14% |
| Napier vs Leroy | 4–2 | 66.67% |
| Napier vs Jack-8 | 2–3 | 40.00% |
| Napier vs Azucena | 3–2 | 60.00% |
| Napier vs Raven | 3–2 | 60.00% |
| Napier vs Shaheen | 2–2 | 50.00% |
| Napier vs Victor | 2–2 | 50.00% |
| Napier vs Alisa | 0–3 | 0.00% |
| Napier vs Anna | 0–2 | 0.00% |
| Napier vs Zafina | 1–0 | 100.00% |
| Napier vs Lidia | 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.