TENNIS DOUBLES TIP
Avoid the one up, one back formation against skilled opposition. This conventional doubles formation is reasonably effective against teams of limited abilities, but skilled opponents will exploit the huge gap that it creates between you and your partner. Instead, play both up if you are skilled at volleying and covering lobs… play both back if you are not. Both back is the best way to remain competitive against a doubles team of greater skill.
Don’t try to “hit ’em where they ain’t.” It is very difficult to hit a shot where neither opponent can reach it when two opponents are patrolling the court. Instead, aim…
At your opponents’ feet. These shots are very tricky to return.
Right down the middle of the court. Your opponents will have trouble finding a winning angle on their return, and there might be a crucial moment of confusion as your opponents decide who will return the shot.

Over your opponents’ heads if both opponents are up at the net.