Groups could then be randomly drawn, with one team from each tier going into each group. The NBA is working on approaches to fairly balance the groupings, such as limiting each group to only three Western Conference teams, according to multiple front office sources. Drawings for the group stage could be televised, league sources say. The NBA draft lottery has yielded between 2.4 million and 4.4 million viewers the past 10 years on ESPN; a live drawing of the groups, even with Silver and a representative from every team broadcasting from their own homes, would do major numbers. Here’s one draw of the groups based on a random number generator: