Great advice to keep your wrist and elbow joints pain free (and help relieve pain from damage already done.)
I have attached 2 files for you that address "tennis elbow" and "golfer's elbow". You don't have to play either of these sports to experience tendonitis in the elbow. Repetitive stress on the wrist and elbow joint can lead to inflammation of the tendons - we need to ensure the strengthening of the surrounding muscles to protect the joint and connective tissue.
I hope you have some time to read and then implement the exercises/stretches found in the 2 articles provided. They are sourced from: drbenkim.com (I subscribe to his newsletter and get quite a lot out of it).