Personalized Tennis Ball Toddler Long Sleeve T-Shirt. Tennis Ball character holding a tennis racquet, heads to the court with teeth grit in determination. Funny Toddler Long Sleeve Tee - White for any tennis lover! A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.