| Nin9ball vs King | 114–146 | 43.85% |
| Nin9ball vs Kazuya | 105–138 | 43.21% |
| Nin9ball vs Heihachi | 112–110 | 50.45% |
| Nin9ball vs Jin | 115–105 | 52.27% |
| Nin9ball vs Bryan | 109–111 | 49.55% |
| Nin9ball vs Law | 76–93 | 44.97% |
| Nin9ball vs Reina | 101–66 | 60.48% |
| Nin9ball vs Yoshimitsu | 70–77 | 47.62% |
| Nin9ball vs Hwoarang | 61–85 | 41.78% |
| Nin9ball vs Steve | 66–66 | 50.00% |
| Nin9ball vs Lili | 67–58 | 53.60% |
| Nin9ball vs Dragunov | 47–77 | 37.90% |
| Nin9ball vs Asuka | 57–51 | 52.78% |
| Nin9ball vs Paul | 40–64 | 38.46% |
| Nin9ball vs Lee | 44–59 | 42.72% |
| Nin9ball vs Jun | 53–48 | 52.48% |
| Nin9ball vs Leo | 50–44 | 53.19% |
| Nin9ball vs Lars | 37–54 | 40.66% |
| Nin9ball vs Azucena | 47–44 | 51.65% |
| Nin9ball vs Xiaoyu | 48–40 | 54.55% |
| Nin9ball vs Victor | 35–48 | 42.17% |
| Nin9ball vs Lidia | 29–47 | 38.16% |
| Nin9ball vs Eddy | 24–50 | 32.43% |
| Nin9ball vs Feng | 29–44 | 39.73% |
| Nin9ball vs Nina | 30–43 | 41.10% |
| Nin9ball vs Devil Jin | 18–53 | 25.35% |
| Nin9ball vs Alisa | 27–37 | 42.19% |
| Nin9ball vs Clive | 32–30 | 51.61% |
| Nin9ball vs Jack-8 | 26–32 | 44.83% |
| Nin9ball vs Leroy | 25–26 | 49.02% |
| Nin9ball vs Claudio | 29–20 | 59.18% |
| Nin9ball vs Zafina | 19–23 | 45.24% |
| Nin9ball vs Raven | 16–23 | 41.03% |
| Nin9ball vs Kuma | 25–13 | 65.79% |
| Nin9ball vs Fahkumram | 7–22 | 24.14% |
| Nin9ball vs Anna | 9–18 | 33.33% |
| Nin9ball vs Armor King | 7–15 | 31.82% |
| Nin9ball vs Panda | 8–11 | 42.11% |
| Nin9ball vs Shaheen | 12–5 | 70.59% |
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.