There are two ways to take on "tennis elbow/lateral elbow pain"
You can band-aid it with a brace or you can fix the actual problem causing the pain.
Most of the time it's because your muscles aren't strong enough to handle loads when they are in a long position.
So basically imagine your wrist going backwards would be the short position for the affected muscles and the wrist downwards would be the long.
You can stretch the muscles all day and night and you're really not going to get any results because you're mainly stretching tendons, which is one of the major problems in the first place.
You need to get some muscle work/massage/soft tissue work done on the actual muscle bellies while you move your wrist.
After the pain subsides you need to strengthen the right muscles. Depending on the equipment you have these can range from fairly simple exercises to various complicated ones.
Bone spurs come later when you let this problem occur over time. Basically the body protects the area that is essentially being constantly torn, by replacing those tendons with bone. Again, the bone spur isn't the problem, it's what is causing the need for the bone spurts.