Add lead tape. If you're feeling soreness in your elbow, add lead tape around your racket to make it heavier. It will reduce the shock transmitted to your arm. Check your grip. If you're feeling soreness in your elbow, ask a Pro to make sure your grip is the right size for you. Drink up. Make sure to drink plenty of fluids before, during and after your tennis match. Get a sports massage. To prevent injury, get a sports massage to help loosen up your muscles. Grip size. Make sure your racket has the right grip size for you to prevent tennis elbow. Lower body stretch. Make sure to stretch your calves, quads, hamstrings and hips. Stretch. After warming up, make sure to stretch to increase the range of motion of your joints. String low. To prevent or relieve soreness, string your racket towards the lower end of the recommended tension range for your racquet. Thicker strings. To prevent or relieve soreness, try using a thicker string for your racket to absorb more of the impact. Upper body stretch. Make sure to stretch your shoulders, triceps and wrists before playing tennis. Warm up. Make sure to spend 15 - 30 minutes warming up immediately before playing.