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Colorado center Nathan MacKinnon (29) faced off against St. Louis center Steve Ott (29) in the third period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado center Nathan MacKinnon (29) collided with St. Louis right wing Vladimir Tarasenko (91) in the first period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

St. Louis center Patrik Berglund (21) tried to get his stick on the puck in front of Avs goalie Semyon Varlamov in the second period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

The Avalanche celebrated a third period goal Saturday. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado center Nathan MacKinnon skated in the third period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado goaltender Semyon Varlamov watched the puck from behind St. Louis center David Backes (42) in the first period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado center Nathan MacKinnon (29) skated in the first period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado defenseman Erik Johnson (6) got tangled up with St. Louis wing T.J. Oshie (74) in the second period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado goaltender Semyon Varlamov stuffed St. Louis center Maxim Lapierre (4) on a a breakaway in the second period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado wing Jamie McGinn (11) and defenseman Jan Hejda (8) cleared the puck in the first period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado wing Gabriel Landeskog (92) fired a shot on St. Louis goaltender Ryan Miller (39) in the second period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado center Nathan MacKinnon skated with the puck in the third period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

St. Louis center David Backes (42) knocked the puck past Colorado goalie Semyon Varlamov for a goal in the second period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado center Nathan MacKinnon skated in the third period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

St. Louis goaltender Ryan Miller (29) kept his eyes trained on Colorado center Ryan O'Reilly (90) in the first period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado center Matt Duchene (9) tried to feed Ryan O'reilly (90) in front of the net in the first period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )

Colorado goalie Semyon Varlamov turned his back to the skirmish between players going on behind his net in the first period. The St. Louis Blues defeated the Colorado Avalanche 2-1 at the Pepsi Center Saturday afternoon, March 8, 2014 in Denver, Colorado. (Photo by Karl Gehring/The Denver Post) ( SP08AVSBLUES )