Although Chris Wilcox has taken over the Celtics' backup center role, coach Doc Rivers says his minutes aren't guaranteed. Wilcox had five points and one rebound in 15 minutes Friday night, after which Rivers seemingly threatened Wilcox's reserve role. "We want Chris to play better. That's the guy we want but that doesn't mean that's the guy it's going to be. There's other guys behind him, they want his minutes, too," Rivers said. Wilcox hasn't done anything to distinguish himself this season and doesn't belong on any fantasy team.