NEW ORLEANS (AP) — Zion Williamson sprinted down the sideline of an empty practice football field on a campus that houses the headquarters of the NBA's New Orleans Pelicans and NFL's New Orleans Saints. Nearby, a couple members of the Pelicans' training staff oversaw the injury-plagued forward's offseason conditioning work. That scene back in August symbolized a substantive change Williamson made in an effort to come back healthy after playing in just 29 games last season because of a hamstring injury.