Abstract: A device (10) for practicing throwing a ball (24) includes an elongated bag (12) having an opening (14) at one end thereof with a second end (16) of the bag being closed. A flexible sleeve (18) is fixed to the bag around a perimeter of the opening of the bag. The flexible sleeve and the opening in the bag allow a hand (26) of a person to pass through the sleeve and the opening. A cinching strap (20) provided with a hook and loop fastening system (22) is fixed to the sleeve. A ball is placed inside the bag, and a hand of a person is passed through the sleeve into the bag. The device is secured to a forearm or wrist of the person such that the device will not become separated from the person when the person has his hand in the bag with a ball grasped by his hand and releases the ball from his grasp when making a throwing motion.