A training device that will train a player to throw the ball to the correct height and angle for a serve is provided. The device includes a pole that adjusts from about four feet to twelve feet in height to suit a player's need. The pole is supported by a base and includes an upper toss hoop at the top of the pole and a lower guide hoop at the bottom of the pole for receiving and locating the position of the tossed tennis ball. In one embodiment the lower guide hoop includes or is replaced by a basket for retrieving the tossed practice balls. The base legs and upper and lower hoops fold away for easy storage and transport.