Yo mate, this is Daytona675x and I bought your great NES soccer sprite sheet quite a while ago when I started my Amiga soccer game project. For my needs I had to edit it a bit, mostly to get rid of the black outline; in my game the sprites are zoomed and the outline didn't work too well in that special case :)
Anyway, I just wanted to thank you and tell you that I put you into the credits, of course.
It's still wip but getting close to be finished, if you want to take a look:
(1) Souverän Soccer 37 - YouTube