Rare 2006 Indiana Pacers Game Used Synthetic Basketball Rare 2006 Indiana Pacers Game Used Synthetic Basketball. The NBA introduced these balls for the 2006-07 season, they were met with so much resistance from the players that the league switched back to the old balls after 2 months. The balls in team inventories were recalled by the league Offered here is the opportunity to own one of these rare balls that did not make it back to the league office.