Flagg’s visit included dinner with team officials on Tuesday and an assortment of players on Wednesday, and he thoroughly enjoyed both evenings, according to league sources. But his time on the court on Wednesday is what has Mavericks circles buzzing. Ahead of the draft, one of the biggest knocks against Flagg has been his jumper and being able to space the floor in a frontcourt that includes Anthony Davis and two rim-rolling centers in Dereck Lively II and Daniel Gafford, but he put that concern to rest in his first-ever Mavericks workout.