Wilcox had only one rebound in seven minutes and didn't play in the second half of Sunday's 113-101 victory against the Golden State Warriors. He also grabbed only one rebound in 13 minutes in Friday's 97-91 victory over the Lakers.
Post players are expected to average at least one rebound every three to four minutes in Coach Mike Dunleavy's grading system. Wilcox averages four points and 2.8 rebounds in 12.8 minutes.
"Chris is playing behind one of the best power forwards in the league," Cassell said. "People have to understand that there aren't too many power forwards playing better basketball in the league than E.B.
"Chris is playing behind a guy who's going to be on the court a lot. It's hard to get on the court for three or four minutes, and do the things that we need him to do, but he's going to keep working."