In tennis, down the line refers to the same side of the court on the opponent's court area. For example, for two right handed players, down-the-line would refer to the forehand side of one person and the backhand-side of the other.
The ad side of a tennis court is the players left side. Or the opponents right side.
A backhand swing in tennis is using either one or two hands on the opposite side of your dominant hand to hit the ball. For example, if you have a two-handed backhand and you are right handed, you would swing at the ball with two hands on your left side. Thus, your backhand swing is on your left side with two hands.
That's called a forehand. On the opposite side, it's called a backhand.
in the middle of the court.
if you are serving, it is the "left" side of the court
If you are standing on the baseline and looking at the net, the right-hand side of the tennis court is called the deuce side.
The deuce side is the right-hand side of the court.
I believe it is the right side.
his o he side of the court
It's easier to reach the Ball if it's smashed to your left side (if you are right handed) and you can react faster
I will interpret this question as asking which SIDE of the tennis court do you serve into first in tennis. The two halves of the tennis court are called "ad" (short for advantage) and "deuce." Your ad court is diagonal to your opponent's ad court and your deuce court is diagonal to your opponent's deuce court. You begin serving on your ad side diagonally into your opponent's ad side. If you are facing the net from the baseline, the ad side is the right and the deuce side is the left. In simpler terms, you start on the right side and serve diagonally into the left side of your opponent's court. This is a link to a tennis court diagram. Perhaps a visual will help better understand the answer to your question. It can be found on the related links.