Can an object follow a shape's dots while in animation?

[aliyildirim.eco]

Hello

I really don't know how can I solve this. As you can see in the video, I have a stick with 2 dots. I just create a shape animation with theese dots. But I want to the red ball follow the dots movement. Especcially 2nd dots movement. How can I that? How can an object follow the any shape's dots? 

Thank you.

[Mylenium]

Create a skinny solid, parent the dot to it. Done. no need to make it more complicated than that.

Mylenium