St. Louis was outshot 16-6 in the first period and 28-10 through two periods.
"I thought we did a lot of good things," Hanifin said. "A few chances they had, they capitalized on. That's something we've got to clean up. I think in the second period they were only at 10 shots, but we were giving them good chances and that's something we can't allow, especially with the identify of our team. That's something we don't normally do."
NOTES: Ritchie sustained an apparent lower-body injury at 10:43 of the third period when Blues defenseman Robert Bortuzzo fell awkwardly on his right leg. There was no update. ... Calgary has lost three in a row for the first time since a four-game losing streak from Jan. 4-13. ... Thomas has scored nine points (three goals, six assists) in a five-game point streak. ... O'Reilly has scored four points (two goals, two assists) in his past three games. ... The Flames are 1-12-2 when trailing after two periods this season. ... The Blues, who were part of the 1967 NHL expansion, have 1,967 wins. … Husso is 9-0-1 against the Pacific this season, one of two goalies without a regulation loss against a single division (Markstrom, 9-0-2 vs. Metropolitan). … St. Louis forward Pavel Buchnevich set an NHL career high with his 31st assist. He had 30 assists with the New York Rangers in 2019-20. … Hanifin set an NHL career high with 34 points. He scored 33 points in 2018-19.