The two longest outside lines on a tennis court are called the doubles lines or doubles sidelines.
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the right is the deuce side and the left is called the ad side
If a player is standing on the baseline and looking at the net, the left side of the court is called the ad side.
The ad side of a tennis court is the players left side. Or the opponents right side.
if you are serving, it is the "left" side of the court
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.
deuce side..the left side is the ad side
You begin play by serving from the Right Side of the Court (known as the duece court) serving to the left.
This is called text-aligning a page to the left.
No the left edge is even, if the left edge is ragged then it is either centered or right aligned.
Go to a Tennis/Golf club, and at the end of the week ask if they have any balls they are going to throw out, so you can keep them instead. That or go to a golf/tennis course and pick up any left over balls. I've left some tennis balls on the court for others.
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.