ST. LOUIS — After 20 years, Colorado is at last back in the Western Conference finals.
Fourth-line center Darren Helm scored with 5.6 seconds remaining in regulation to lift the Avalanche to a 3-2 victory over the Blues in Game 6 of the Western Conference semifinals here Friday night. Skating down the left side, Helm lifted the puck over the left side of goalie Ville Husso.
The Avs, who entered Game . . .