FILE - In this Oct. 8, 2019, file photo, NBA Commissioner Adam Silver speaks at a news conference before an NBA preseason basketball game between the Houston Rockets and the Toronto Raptors in Saitama, Japan. A person familiar with the negotiations says the NBA is working with the players union and its teams on a plan to shorten the regular season, possibly to 78 games. (AP Photo/Jae C. Hong, File)