| Neph vs Armor King | 247–223 | 52.55% |
| Neph vs King | 229–200 | 53.38% |
| Neph vs Kazuya | 169–193–1 | 46.69% |
| Neph vs Jin | 182–150 | 54.82% |
| Neph vs Law | 178–148 | 54.60% |
| Neph vs Hwoarang | 137–170 | 44.63% |
| Neph vs Steve | 144–155 | 48.16% |
| Neph vs Bryan | 121–145 | 45.49% |
| Neph vs Reina | 130–109 | 54.39% |
| Neph vs Dragunov | 102–119 | 46.15% |
| Neph vs Fahkumram | 118–95 | 55.40% |
| Neph vs Paul | 103–88 | 53.93% |
| Neph vs Heihachi | 80–96 | 45.45% |
| Neph vs Lili | 85–81 | 51.20% |
| Neph vs Jun | 84–77 | 52.17% |
| Neph vs Lee | 73–80 | 47.71% |
| Neph vs Azucena | 68–84 | 44.74% |
| Neph vs Yoshimitsu | 55–79 | 41.04% |
| Neph vs Xiaoyu | 42–83 | 33.60% |
| Neph vs Lars | 57–67 | 45.97% |
| Neph vs Anna | 55–69 | 44.35% |
| Neph vs Alisa | 57–64 | 47.11% |
| Neph vs Devil Jin | 50–69 | 42.02% |
| Neph vs Feng | 44–73 | 37.61% |
| Neph vs Miary Zo | 56–61 | 47.86% |
| Neph vs Asuka | 55–53 | 50.93% |
| Neph vs Raven | 48–57 | 45.71% |
| Neph vs Eddy | 47–58 | 44.76% |
| Neph vs Leroy | 38–63 | 37.62% |
| Neph vs Lidia | 51–50 | 50.50% |
| Neph vs Clive | 43–55 | 43.88% |
| Neph vs Nina | 48–46 | 51.06% |
| Neph vs Jack-8 | 36–57 | 38.71% |
| Neph vs Claudio | 39–38 | 50.65% |
| Neph vs Victor | 33–41 | 44.59% |
| Neph vs Leo | 23–50 | 31.51% |
| Neph vs Kuma | 20–20 | 50.00% |
| Neph vs Shaheen | 12–23 | 34.29% |
| Neph vs Zafina | 5–23 | 17.86% |
| Neph vs Panda | 11–13 | 45.83% |
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.