Rule 4.A.2.a.
At least one foot must be on the playing surface behind the baseline.
Rule 4.A.2.b.
Neither of the server's feet may touch the court on or inside the baseline.
Rule 4.A.2.c.
Neither of the server's feet may touch outside the imaginary extensions of the sideline or centerline.
Rule 4.A.3.
The server's arm must be moving in an upward arc at the time the ball is struck and may be made with either a forehand or backhand motion.
At least one foot must be on the playing surface behind the baseline.
Rule 4.A.2.b.
Neither of the server's feet may touch the court on or inside the baseline.
Rule 4.A.2.c.
Neither of the server's feet may touch outside the imaginary extensions of the sideline or centerline.
Rule 4.A.3.
The server's arm must be moving in an upward arc at the time the ball is struck and may be made with either a forehand or backhand motion.
Rule 4.A.4.
The highest point of the server's paddle head must not be above the highest part of the wrist (where the wrist joint bends) when it strikes the ball.
The highest point of the server's paddle head must not be above the highest part of the wrist (where the wrist joint bends) when it strikes the ball.
Rule 4.A.5.
When serving, contact with the ball must not be made above the waist.
When serving, contact with the ball must not be made above the waist.
