It was in the middle of the second period.
Colorado led 4-2, and Jacob Trouba got on a heavy shoulder tackle on Nathan McKinnon who took account and had a hard time getting up.
On unsteady legs, he went out into the locker room but returned later in the match.
Landeskog stood right next to him and threw the club and challenged Trouba, who sent Chicago's Juhjar Kharia to the hospital with a tackle the other day, who accepted the challenge.
They applied for a position as two boxers and Landeskog's helmet fell off when they started cranking at each other and a wild fight was a fact.
Continued to play after the expulsions
Just before, McKinnon had equalized to 2-2 in the second period when Colorado made it 5-0 at Rangers who lost at home for the first time since October 25.
It was an ungrateful NHL debut for Adam Huska.
- He made several nice saves in the first period.
We lost as a team today, says Rangers coach Gerard Gallant according to the New York Post.
Both Landeskog and Trouba could continue to play after a short visit to the expulsion booth for unsportsmanlike conduct.
Back Nils Lundkvist scored his first NHL goal when he made it 2-1 for Rangers at the end of the first period.
With a wrist shot from the left technical circle in powerplay, the 21-year-old ex-luleå player found the goal.
- We did well offensively tonight, says Colorado's coach Jared Bednar after the team scored seven goals for the second game in a row.
On Monday, Philadelphia was defeated 7-5.
The fight was not commented on after the match.