When serving or returning, there is a deuce side and an ad side. The deuce side is on the right, the ad side is on the left.
deuce side..the left side is the ad side
Deuce in tennis is when both the opponents, doubles, or singles, have "40" points in which is called deuce. After the deuce point, the match is either over, or you go into "add" scoring.
The right hand side is the deuce side and left is the ad side.
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.
The typical sport that uses the term, "deuce", is Tennis or Table Tennis.
Each player starts off on the deuce side (right side of the court) at the beginning of the game and alternates between deuce and ad (left side) every point, but every game always starts on the deuce side.
Right side facing the net. This is called the deuce side. The left side is called the ad side.
In tennis, when both opponents are tied at 40-40, the score is called deuce. Deuce changes to advantage when one opponent scores after achieving deuce.
Deuce is where both players are on 40 in a match of tennis
tennis
The term is called "Deuce."