McDavid, Draisaitl can't drag Oilers to win over Blues:
Blues goalie Jake Allen made 32 conserves to enhance to 3-1 on the season.
"I've seemed like I've been improving every game to be honest than at the start of the year," he said. "I felt a lot more comfy and it felt good to get a lot of action and certainly it was good to get the win and the guys battled hard."
Connor McDavid and Zack Kassian responded for the Oilers (10-5-2), who have lost two in a row.
"This was a lesson for us," said Oilers defenceman Oscar Klefbom. "This was a playoff game and clearly we have a long method to go. We need to find a method to win these games since there are going to be much of them this year.
"We're going to play a great deal of great teams and we have to be ready. They played last night, we provided a bit too much and it cost us."
Leon Draisaitl extended his point streak to seven games with a feed to McDavid, who tucked his 8th objective of the season through Allen's legs to open scoring on a power play 2:46 into the game.
When Schwartz tipped a Pietrangelo point shot previous Oilers starter Mike Smith, St. Louis responded with a power-play goal of its own less than 4 minutes later. He completed with 20 conserves.
Pietrangelo's long-range bomb beat Smith 7:10 into the 2nd period on another power play. Ryan O'Reilly's deft pass to Pietrangelo established the goal and the 2-1 lead for the Blues.
St. Louis added to its lead with 4:42 staying in the 2nd as Thomas beat Smith glove side for his 3rd of the year.
Draisaitl got another assist with 9 minutes delegated play when he sent a long feed to Kassian, who selected the leading corner.
Bozak's short-handed empty-net goal went into the web on a lucky bounce prior to Barbashev included another short-handed empty-netter.
Blues make trade after video game
After the video game, the Blues announced they acquired forward Jacob de la Rose from the Detroit Red Wings on Wednesday night in exchange for forward Robby Fabbri.
The 24-year-old de la Rose had an objective and three assists in 16 video games for the Red Wings this season. The Swede has 12 objectives and 20 assists in 195 regular-season games with Montreal and Detroit.
The 23-year-old Fabbri had an objective in nine video games for heaven this season. He has 32 objectives and 41 assists in 164 regular-season video games, all with the Blues. He appeared in 10 championship game last season to help St. Louis win the Stanley Cup.
Detroit lost 5-1 at the New York Rangers on Wednesday, the Red Wings' fourth straight loss. They are 1-11-1 in their last 13 video games.