However, Stern initially refused to go back to the original ball despite many complaints by players about the new ball. Two months into the season, the National Basketball Players Association filed a grievance related to the quality of the ball and the cuts it had caused on players' fingers. Stern acknowledged that the NBA "could have done a better job" with the decision and implementation, and that it would have been better to get the players' input in advance. On December 11, 2006 the NBA announced that it would in fact switch back to the leather ball starting on January 1, 2007.