| Sumio Kodai vs Kazuya | 53–61 | 46.49% |
| Sumio Kodai vs Jin | 51–46 | 52.58% |
| Sumio Kodai vs Reina | 48–33 | 59.26% |
| Sumio Kodai vs Law | 39–33 | 54.17% |
| Sumio Kodai vs Steve | 41–29 | 58.57% |
| Sumio Kodai vs Hwoarang | 30–38 | 44.12% |
| Sumio Kodai vs King | 30–35 | 46.15% |
| Sumio Kodai vs Bryan | 29–36 | 44.62% |
| Sumio Kodai vs Jun | 32–22 | 59.26% |
| Sumio Kodai vs Yoshimitsu | 24–25 | 48.98% |
| Sumio Kodai vs Paul | 31–15 | 67.39% |
| Sumio Kodai vs Lili | 25–20 | 55.56% |
| Sumio Kodai vs Devil Jin | 21–20 | 51.22% |
| Sumio Kodai vs Dragunov | 18–23 | 43.90% |
| Sumio Kodai vs Victor | 23–18 | 56.10% |
| Sumio Kodai vs Lidia | 18–22 | 45.00% |
| Sumio Kodai vs Heihachi | 23–13 | 63.89% |
| Sumio Kodai vs Lee | 21–14 | 60.00% |
| Sumio Kodai vs Nina | 19–13 | 59.38% |
| Sumio Kodai vs Xiaoyu | 10–17 | 37.04% |
| Sumio Kodai vs Lars | 17–10 | 62.96% |
| Sumio Kodai vs Anna | 14–12 | 53.85% |
| Sumio Kodai vs Asuka | 13–12 | 52.00% |
| Sumio Kodai vs Alisa | 13–12 | 52.00% |
| Sumio Kodai vs Azucena | 14–10 | 58.33% |
| Sumio Kodai vs Feng | 14–9 | 60.87% |
| Sumio Kodai vs Leroy | 13–9 | 59.09% |
| Sumio Kodai vs Leo | 7–10 | 41.18% |
| Sumio Kodai vs Eddy | 7–9 | 43.75% |
| Sumio Kodai vs Kuma | 3–10 | 23.08% |
| Sumio Kodai vs Raven | 4–9 | 30.77% |
| Sumio Kodai vs Shaheen | 5–3 | 62.50% |
| Sumio Kodai vs Jack-8 | 2–4 | 33.33% |
| Sumio Kodai vs Clive | 2–4 | 33.33% |
| Sumio Kodai vs Claudio | 1–4 | 20.00% |
| Sumio Kodai vs Zafina | 0–4 | 0.00% |
| Sumio Kodai vs Fahkumram | 3–1 | 75.00% |
| Sumio Kodai vs Armor King | 1–2 | 33.33% |
| Sumio Kodai vs Panda | 1–1 | 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.