Bowling balls and methods of forming the same

A method for forming a bowling ball, comprising:

• supporting at least one core layer within a mold with a support, the at least one core layer comprising a high density material having a configuration and being supported at a position to provide the bowling ball with selected performance properties and/or characteristics;
• introducing a liquid curable material about the at least one core layer and forming a cover stock layer about the at least one core layer, wherein the support at least partially forms a passage in the cover stock layer;
• and
• receiving a filler material in the passage in the cover stock layer to form a riser pin feature that is in an opposite hemisphere from a true center of gravity and/or a marked heavy spot of the bowling ball.

A bowling ball, comprising:

• an inner core layer including a high density material and that is shaped, constructed, and/or configured to give the bowling ball with one or more prescribed properties or characteristics;
• an outer core layer that is at least partially received about the inner core layer;
• a cover stock layer including a liquid curable material and that is received about the outer core layer, the inner core layer, the outer core layer, and the cover stock layer in combination providing a differential radius of gyration of at least 0.025 for the bowling;
• a riser pin portion including a filler material that is received within a passage extending through at least the outer core layer and the cover stock layer located in an opposite hemisphere of the bowling ball from a hemisphere including a true center of gravity and a marked heavy spot of the bowling ball, and arranged within about 1 inch of an end of a Low Radius of Gyration Axis of the bowling ball;
• and
• at least one marking portion for locating one or more gripping holes along the cover stock layer, the at least one marking feature being arranged along the hemisphere including the true center of gravity and the marked heavy spot of the bowling ball and being 180 degrees opposite from the riser pin feature.