Yes, WNBA basketballs are smaller than NBA basketballs. The WNBA uses a ball with a circumference of 28.5 inches (72.4 cm) and a weight of about 20 ounces (567 grams). In contrast, the NBA uses a ball with a circumference of 29.5 inches (75 cm) and a weight of about 22 ounces (624 grams).
The difference in size and weight is designed to accommodate the generally smaller hand sizes and strength levels of the women playing in the WNBA, making it easier for them to handle the ball during games.
