Paul Annacone and Prakash Amritraj have teamed up to share their knowledge in a new series called Distance Learning. In episode one, the two "doubles partners" tackle the serve. 

Here's their study guide:

Paul’s Do’s

1

Keep it simple 

2

Use your legs 

3

Synchronize 


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Prakash’s Don’t's: 

1

Move your feet too much 

2

Go up and down 

3

Be too rigid 

Annacone suggests picking someone to emulate and so he went with Serena Williams, calling her arguably the greatest server the world has seen. Amritraj opted for John Isner because the mechanics of his serve are very repeatable.