Sphere looks squashed stretched in game tab

Hi, just went through the Roll-A-Ball tutorial, and my sphere object looks squashed/stretched in the game tab and while playing. Everything else looks fine, just the sphere that looks off.

If the sphere is child object of something (maybe the walls) it inherits their scaling. So if you have a parent object that has a scale of (5, 1, 5), the ball will look stretched.