I want to design a logo for a sport team, but I couldn't find good fonts. I've found some great sport logos on DeviantArt, but I don't know these fonts. Or are they own-made fonts, if yes, can you tell me some similar ones?

http://img89.imageshack.us/img89/7923/57608084.png
http://img264.imageshack.us/img264/3126/63689941.png
http://img832.imageshack.us/img832/4378/98948295.png
http://img534.imageshack.us/img534/2545/33204638.png

I'm especially interested in the "Tornado" one.

Thank you!