Erik Johnson scored the overtime game-winner in a 4-3 comeback victory over the top-seeded Chicago Blackhawks.
The writing has been on the wall for some time, but on Monday, the NHL confirmed that they will not be participating in the games.
The win snapped a seven-game losing streak by Colorado, their second-longest of the season.
Five different Washington skaters scored in a 5-3 game that moves the Capitals one step closer to a President's Trophy.
The Avalanche came out with intensity in the first period. They just hit a proverbial iceberg in the second and could never recover.
Francois Beauchemin lit the lamp with 1:14 remaining in the third period on Thursday to break a 2-2 tie and give Colorado its 10th home win on the season.
It was a night of firsts for a pair of Avs on Saturday as Colorado skated to a 5-3 victory over the Buffalo Sabres at Pepsi Center.