The official basketball of the NBA since 1983 and the maker of hoops backboards and equipment, Spalding now has its eyes on feet, unveiling plans to launch a line of basketball shoes in 2014 with marketing support that will seek to intrude into a category dominated by Nike and division Jordan Brand, with adidas and Under Armour also key players in a U.S. market valued at $14B and a global category put at $75B.