Mavs rookie Cooper Flagg returns to lineup against Hornets and former Duke teammate Kon Knueppel Thursday Dallas Mavericks rookie phenom Cooper Flagg will return to the lineup on Thursday night when they take on the Charlotte Hornets. Content Original Link: https://sports.yahoo.com/nba/breaking-news/article/mavs-rookie-cooper-flagg-returns-to-lineup-against-hornets-and-former-duke-teammate-kon-knueppel-thursday-220125904.html