Then again, look who we are talking about. I don't believe the Enquirer, but I've always thought it odd that Cosby didn't use his fame to promote gun control following his son's murder. Jesus, that's a low blow even for the Enquirer if they're making it up to sell papers.
Wearing a tennis elbow brace or support can help reduce the strain on the tendon enabling healing to take place. Sports massage can be of benefit and a doctor may prescribe medication such as Ibuprofen to help reduce symptoms.
Partner tennis elbow stretches. The arm should be out to the side, and rotated inwards (downwards). The wrist is then flexed (bent) to increase the stretch. This stretch is more easily done with a partner to help. Hold the position for 30 seconds and repeat 5 times. Aim to stretch at least 3 times a day.