NASHVILLE, Tenn. (AP) — Petr Mrazek stopped 30 shots to remain unbeaten against Nashville as the Detroit Red Wings beat the Predators 3-1 Saturday night. Mrazek improved to 6-0-0 in his career against the Predators, coming within minutes of getting his second shutout against them. Defenseman Luke Witkowski scored his first NHL goal, Gustav Nyquist and Darren Helm also scored for the Red Wings, who beat Nashville for the seventh straight time. Craig Smith scored for the Predators, who lost in regulation at home in consecutive games for the first time since Dec.