NASHVILLE — Rookie goalie Arturs Silovs will start in net for the Vancouver Canucks when they face the Nashville Predators in Game 4 of their first-round playoff series Sunday. The 23-year-old Latvian led the Canucks out onto the ice for warm ups. He'll be backed up by 24-year-old Belarusian netminder Nikita Tolopilo, who has never played an NHL game. Silovs is the third goalie to play for the Canucks in the best-of-seven series, and has spent much of the season with Vancouver's American Hockey