A sport ball may include a casing, a restriction structure, and a bladder. The casing forms at least a portion of an exterior surface of the ball. The restriction structure is located within the casing and includes a textile element having a seamless portion with a non-planar configuration. The bladder is also located within the casing. The textile element may be a knitted fabric. Although the restriction structure may be seamless, the restriction structure may also include at most one seam or multiple seams that joins edges of the textile element. In addition, the seamless portion of the textile element may cover at least thirty percent or more of the surface of the bladder.