It’s a market inefficiency that NBA GMs would be wise to correct. After studying the results of over 2,000 draft selections since 1989, new research suggests that second-generation athletes are vastly underrated compared to their pedigree-free peers. Many of the nepo-ballers slid on draft night. Some of them — Seth Curry, Gary Payton II and Wes Matthews Jr. — weren’t drafted at all. An Eastern Conference GM reasoned, “You don’t want to rank him high just because of his father, so maybe you underrank.” The longtime exec dubbed it, “The Seth Curry Phenomenon.”