Before you start to play:
Stretch and warm up before going full out. Give extra attention to
stretching problem areas.
Check with your doctor regarding exercise and any physical conditions
that exist or may have previously existed.
Be sure to have the proper shoes, ones that support the feet and are designed for court sports.
Give an existing injury plenty of time and rest to heal before you resume play.
Know how you will be able to get quick help if you or a co-player are hurt or develop a medical problem. Is there a telephone or a first aid kit nearby? Do you have the phone number available of someone to call in case of emergency?
Be aware of any obstacles in the area that you might run into or trip over.
Never play on a wet court. They are extremly dangerous.
During Play:
Learn to return lobs correctly. Never back up on your heals, instead turn around and go back to get to the ball. Serious head injuries can occur if you fall over backwards.
During play, if pain occurs, stop playing and ice the pain area. Continuing to play will likely aggravate your problem.
Age, experience, physical condition and athletic ability will impact the level of your game. Don't try to make plays beyond your abilities.
Special Needs
Never start play without wearing prescribed braces or supports.
Know your exercise limits and be sure to tell co-players what they are. If you have a history of heart problems, back pain, tennis elbow, breathing problems, etc. be sure you have any equipment or medicines at hand.