All eyes will be on Dallas Wednesday night as Cooper Flagg makes his NBA debut with the Dallas Mavericks. The Mavericks will host San Antonio with a 9:30 p.m. Eastern tip-off. Flagg, who was the Mavericks’ first overall pick in June, has impressed during the preseason and is now ready for the regular season to begin. Earlier today, the 18-year-old phenom from Newport expressed his excitement, saying his longtime dream is about to come true.