The Avalanche and Blues are meeting in their second-ever playoff series (2001 Western Conference Final, COL 4-1)… Colorado has picked up "points" in 18 straight contests at Ball Arena dating back to the regular season, including winning 10 in a row on home ice… Goalie Philipp Grubauer appeared in his 20th playoff game with Colorado, taking sole possession of fourth in franchise history in appearances by a netminder… The win moved Grubauer into third place in franchise history for postseason victories (13)... Nathan MacKinnon tallied his 21st and 22nd career playoff goals, moving into a tie with Adam Deadmarsh (22) for ninth place in franchise history. He finished with three points (two goals and assist) and now has 57 in his career, surpassing Claude Lemieux (55) and Adam Deadmarsh (56) for eighth-most in Colorado/Quebec history… MacKinnon's first goal was the game-winner, the sixth of his career in the postseason to move into a tie for four-most in the franchise's annals with Alex Tanguay... Gabriel Landeskog fought St. Louis' Brayden Schenn at 10:47 of the first period. Landeskog is the first Avalanche player to have a fighting major a playoff game since Cody McCormick in Game 2 of the 2008 Western Conference Semifinals against Detroit's Darren McCarty (April 26, 2008)… Landeskog had the Avalanche's first "Gordie Howe" Hat Trick with a goal, assist and fight since Valeri Nichushkin did it during the regular season on Dec. 23, 2019 at Vegas… Cale Makar scored his sixth career playoff goal, moving into sole possession of fourth place in franchise history by a defenseman… Rookie Alex Newhook made his Stanley Cup Playoff debut.