| LittleBoy vs Bryan | 193–161 | 54.52% |
| LittleBoy vs Kazuya | 152–152 | 50.00% |
| LittleBoy vs Dragunov | 161–118 | 57.71% |
| LittleBoy vs Steve | 141–136 | 50.90% |
| LittleBoy vs Paul | 162–113 | 58.91% |
| LittleBoy vs Hwoarang | 163–100 | 61.98% |
| LittleBoy vs Jin | 125–133 | 48.45% |
| LittleBoy vs Asuka | 141–111 | 55.95% |
| LittleBoy vs King | 137–107–1 | 56.15% |
| LittleBoy vs Reina | 119–106 | 52.89% |
| LittleBoy vs Lars | 113–107 | 51.36% |
| LittleBoy vs Feng | 110–102 | 51.89% |
| LittleBoy vs Lili | 118–89 | 57.00% |
| LittleBoy vs Victor | 101–104–1 | 49.27% |
| LittleBoy vs Law | 106–85 | 55.50% |
| LittleBoy vs Devil Jin | 105–84 | 55.56% |
| LittleBoy vs Yoshimitsu | 104–81 | 56.22% |
| LittleBoy vs Zafina | 103–78 | 56.91% |
| LittleBoy vs Azucena | 109–69 | 61.24% |
| LittleBoy vs Lee | 93–80 | 53.76% |
| LittleBoy vs Alisa | 100–72 | 58.14% |
| LittleBoy vs Jun | 96–75 | 56.14% |
| LittleBoy vs Raven | 97–70 | 58.08% |
| LittleBoy vs Claudio | 71–86 | 45.22% |
| LittleBoy vs Jack-8 | 73–83 | 46.79% |
| LittleBoy vs Anna | 82–72 | 53.25% |
| LittleBoy vs Nina | 83–70 | 54.25% |
| LittleBoy vs Xiaoyu | 84–61 | 57.93% |
| LittleBoy vs Shaheen | 63–68 | 48.09% |
| LittleBoy vs Leo | 71–58 | 55.04% |
| LittleBoy vs Leroy | 69–53 | 56.56% |
| LittleBoy vs Eddy | 37–65 | 36.27% |
| LittleBoy vs Heihachi | 46–48 | 48.94% |
| LittleBoy vs Panda | 45–31 | 59.21% |
| LittleBoy vs Kuma | 38–36 | 51.35% |
| LittleBoy vs Clive | 32–38 | 45.71% |
| LittleBoy vs Lidia | 28–37 | 43.08% |
| LittleBoy vs Fahkumram | 10–7 | 58.82% |
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.