Celtics-Nets: Robert Williams showcases Defensive Player of the Year potential in Boston's Game 1 loss | CBS Sports Headlines Celtics-Nets: Robert Williams showcases Defensive Player of the Year potential in Boston's Game 1 loss Williams played the best defensive game of his career against the best offense in basketball ESN … Continue reading Celtics-Nets: Robert Williams showcases Defensive Player of the Year potential in Boston's Game 1 loss