Why you have to watch: Let's start with a little star power. Predators defenseman P.K. Subban is a must-watch every time he hops over the boards, and he has put up seven points in 10 playoff games so far. This postseason run has been pure retribution toward anyone who doubted that a Subban-led defense could challenge for a Stanley Cup. Subban has been great so far. ... Both of these teams are beautifully constructed, and feature modern and fast defenses. The Ducks are deep and loaded with young defensemen, while Nashville has two Norris Trophy-caliber defenders in Subban and Roman Josi.