Of course Giannis Antetokounmpo is back this season — but so is almost everyone else. Continuity could give Milwaukee an edge amid the N.B.A.’s roster upheavals.
PHILADELPHIA — After Khris Middleton spent his first season in professional basketball with the Detroit Pistons and the Fort Wayne Mad Ants of the N.B.A. Development League, he was traded to the Milwaukee Bucks. At the time, he was merely hoping for steady employment.