DENVER — Casey Mittelstadt began the night with ... The Avs said he was officially out with a lower-body injury. Artturi Lehkonen put the Avalanche ahead midway through the opening period.

DENVER (AP) — Casey Mittelstadt scored the go-ahead ... Avalanche beat the Pittsburgh Penguins 4-1 on Tuesday night. Artturi ...

The 1st goal of the postseason for the Colorado Avalanche against the Dallas Stars by Artturi Lehkonen wasn't without controversy, and it could have an effect on the entire series. For the 2nd ...

Artturi Lehkonen, Casey Mittelstadt and Logan O’Connor added goals to help the Avalanche snap a two-game skid. Colorado ...

Artturi Lehkonen, Casey Mittelstadt and Logan O'Connor also scored for Colorado, which ended a two-game skid. Martin Necas had three assists, Cale Makar contributed two assists and Mackenzie ...

Artturi Lehkonen kicked off the scoring in the second period with a whacky goal off his foot while falling, and the Avs never looked back. Nathan MacKinnon added a power-play tally and an empty ...