Ryan Nugent-Hopkins, Oilers beat Flames 6-2 in NHL pre-season

EDMONTON — The penalty killers propelled the Edmonton Oilers to a 6-2 pre-season win over the Calgary Flames on Friday.With the Flames leading 2-1 halfway through the second period, Calgary had the chance to take a stranglehold on a two-man advantage for nearly 90 seconds. But the Oilers penalty killers