Ja Morant unquestionably is one of the NBA’s brightest young stars, but the Memphis Grizzlies have shown they still can win without him. The Grizzlies (50-23) have walked away with a victory in 15 of 17 games without the All-Star guard this season. A sore right knee reduced Morant to the role of a spectator for Memphis’ 132-120 victory over the visiting Brooklyn Nets on Wednesday.