Irving and Bradley, two of a number of veteran players who’ve taken expanded roles in organizing player conference calls in the past week, believe they’re providing a voice for those players fearing retribution if they openly voice their concerns, sources tell ESPN. Irving, Bradley and the coalition of players want to pursue some concerns further with the league, sources said, including: the investment of resources and ideas of all league constituencies — from the commissioner’s office, ownership level, management and players association — in social justice reform.