i came back after a long christmas break of using blender and i just found this problem while following a tutorial. I made all the steps that are shown in this video https://www.youtube.com/watch?v=V3wghbZ-Vh4 and i see that isn't the same.

A better example:

So, the question is, what's happening? what am i doing wrong? Just in case, i unwrapped the ball and isn't looking the same as in the right side preview.