Backyard Football Invisible players
At the main menu, press Z to display the cheats screen, then enter ” GHOST ” as a code.
Fumbles
If you hit someone straight on or behind with speed they will fumble.
Juke
If you go straight for someone and press R or L you will juke them out.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original