Richard needs to make change.
Has anyone seen that video about venus and Serena called Rasing Tennis aces (the Williams Story)?
Well it's this one part where they show richard making his signs. Signs that tell them what to do like listen more etc.
This one sign said " Serena you need to hit with more Top Spin". I didn't like that if your winning slams hitting the ball flat and taking it super early has the sisters do you shouldn't tell them to change.