Enjoy This Hypnotising Video Of Tennis Balls Being MadePrepare to go into a trance like state watching Wilson's US Open tennis balls being made.Author:Jack SladePublish date:Jul 27, 2016Ever wanted to know how tennis balls are made? No? Neither did we. Turns out though it's a mesmerising process. Prepare to go into a trance like state watching the manufacturing of Wilson's US Open tennis balls.