Sport balls and methods of manufacturing the sport balls

A sport ball comprising:

• a casing having an inner surface and an outer surface, the outer surface forming an exterior surface of the sport ball, the casing incorporating a plurality of joined panels, including a closure panel;
• a backing layer located radially inward of the closure panel, the backing layer extending beyond a peripheral boundary of the closure panel and at least partially overlapping with one or more panels adjacent to the closure panel, the backing layer including an opening located radially inward of the closure panel, the opening being smaller than the surface area of the closure panel;
• and
• a bladder located radially inward of the backing layer, the bladder including a valve for introducing fluid into the ball, a portion of the valve extending through the opening and through the closure panel;
• wherein the opening in the backing layer is substantially larger than the portion of the valve extending through the opening;
• wherein the casing includes a first area corresponding to a location of the opening in the backing layer and a second area corresponding with a remainder of the inner surface of the ball;
• wherein the backing layer lines the entire second area of the inner surface of the casing;
• wherein the backing layer is a continuous layer of material;
• wherein the backing layer is discontinuous about the entire periphery of the opening;
• wherein a piece of material is attached to the inside of the closure panel, the piece of material being formed of the same material as the backing layer;
• wherein the piece of material attached to the inside of the closure panel is disposed within the opening in the backing layer;
• wherein the piece of material attached to the inside of the closure panel is in contact with the bladder;
• and
• wherein a substantial majority of the piece of material attached to the inside of the closure panel is unattached to the bladder.