In our experience with working with a lot of Tennis players over the years, some of the best results I have had has been working from a broader context:

• Addressing imbalances through the body, kinetic chains.  Looking at rotations, eg. Hip and shoulder
• Addressing weakness and tightness
• Improving mobility through hips and hamstirngs
• Activating the Glutes
• Releasing the shoulder
• Lastly working on the forearm
• Compression
  

The good news, in all cases that I have treated, Tennis elbow has been reduced and improved.  It can be a stubborn injury but can be improved in time.

We employ a movement screen, range of movement tests, and through treatment plan to address the imbalances.  Exercizes are prescribed both to release tight muscle and activate weak muscles to make the changes long-lasting and sustainable.