| Kumiwa vs Reina | 46–30 | 60.53% |
| Kumiwa vs Jin | 29–33 | 46.77% |
| Kumiwa vs Kazuya | 32–29 | 52.46% |
| Kumiwa vs Heihachi | 25–28 | 47.17% |
| Kumiwa vs King | 25–27 | 48.08% |
| Kumiwa vs Hwoarang | 26–24 | 52.00% |
| Kumiwa vs Steve | 29–20 | 59.18% |
| Kumiwa vs Yoshimitsu | 19–24 | 44.19% |
| Kumiwa vs Law | 23–19 | 54.76% |
| Kumiwa vs Bryan | 24–18 | 57.14% |
| Kumiwa vs Jun | 21–19 | 52.50% |
| Kumiwa vs Dragunov | 23–16 | 58.97% |
| Kumiwa vs Eddy | 20–19 | 51.28% |
| Kumiwa vs Asuka | 20–17 | 54.05% |
| Kumiwa vs Lee | 15–18 | 45.45% |
| Kumiwa vs Lili | 14–18 | 43.75% |
| Kumiwa vs Lars | 18–13 | 58.06% |
| Kumiwa vs Victor | 14–16 | 46.67% |
| Kumiwa vs Leroy | 15–11 | 57.69% |
| Kumiwa vs Paul | 14–11 | 56.00% |
| Kumiwa vs Devil Jin | 10–15 | 40.00% |
| Kumiwa vs Azucena | 10–14 | 41.67% |
| Kumiwa vs Xiaoyu | 11–11 | 50.00% |
| Kumiwa vs Armor King | 9–13 | 40.91% |
| Kumiwa vs Nina | 13–8 | 61.90% |
| Kumiwa vs Lidia | 9–12 | 42.86% |
| Kumiwa vs Zafina | 5–14 | 26.32% |
| Kumiwa vs Alisa | 4–13 | 23.53% |
| Kumiwa vs Claudio | 6–11 | 35.29% |
| Kumiwa vs Leo | 11–5 | 68.75% |
| Kumiwa vs Miary Zo | 11–5 | 68.75% |
| Kumiwa vs Clive | 7–8 | 46.67% |
| Kumiwa vs Feng | 3–9 | 25.00% |
| Kumiwa vs Fahkumram | 6–5 | 54.55% |
| Kumiwa vs Jack-8 | 3–7 | 30.00% |
| Kumiwa vs Kuma | 2–6 | 25.00% |
| Kumiwa vs Shaheen | 3–4 | 42.86% |
| Kumiwa vs Raven | 3–4 | 42.86% |
| Kumiwa vs Anna | 2–5 | 28.57% |
| Kumiwa vs Panda | 2–2 | 50.00% |
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.