ST. LOUIS -- T.J. Oshie got chills from the crowd reaction at the Scottrade Center on Thursday night.
St. Louis has won four in a row and six of seven.
Los Angeles lost a season-high fifth game in a row. The Kings' previous five-game losing streak came Dec. 3-13, 2011.
Oshie scored twice in a 91-second span in the second period to push the lead to 3-0. After his second tally, the standing-room only crowd of 19,839 broke into chants of, "USA, USA," in honor of Oshie's selection to the United States Olympic team Wednesday.
"I thought that was pretty special," Oshie said of the impromptu salute. "I definitely didn't expect it. Once I heard it, I thought. "Wow, what a cool 24 hours for me."
Oshie, who grew up in Warroad, Minn., celebrated his first Olympic berth in style. He recorded his first two-goal game of the season.
"He just keeps on proving that he's deserving of the honor," St. Louis defenseman Alex Pietrangelo said.
Brian Burke, Director of Player Personnel for USA hockey, was in attendance and watched from the press box as Oshie helped dismantle the Kings.
"He's putting on a show," Burke said. "He does just about everything well."
Elliott, who improved to 11-1-2, picked up his third shutout of the season and 24th of his career. He stopped 13 shots in the opening period, including a pad save on Jarret Stoll. Elliott recorded his 12th consecutive home win, a franchise record.
But Oshie, who has eight goals and a team-high 27 assists, stole the show. He scored on a power play at 11:41 of the second period off the rebound of a shot by Jaden Schwartz. Less than two minutes later, Oshie whipped a shot behind replacement Ben Scrivens.
"This was a great team win," Oshie said. "I got two of them, but they could have easily gone to someone else on my line. This was a strong all-around effort."
Morrow scored just 4:42 into the game to give the Blues to a 1-0 lead. Kevin Shattenkirk, another Olympic team selection, missed on a long shot, but Morrow pounced on the rebound at the side of the net and banked it in off goalie Martin Jones.
Jones, who fell to 8-3, gave up two goals on 14 shots and was pulled after Oshie's first tally.
The Kings had won 15 of the previous 18 games between the teams, including postseason play.
But this time around, the Blues got the better of their recent nemesis.
"It's good to get a win and to win like that is key for us," Elliott said. "We can use this as a measuring stick and know that we can do this against good teams."
Los Angeles won four consecutive games after falling behind 2-0 in the opening round of the Western Conference playoffs last season and also swept the Blues in four games in the 2012 conference semifinals.
"When you're playing against a high-quality opponent, you have to be able to get into your game early," Pietrangelo said. "This shows that we can play our game for 60 minutes."
The struggling Kings have been outscored 17-6 during the five-game skid.
"There's not really much to say expect that we played bad," defenseman Drew Doughty said. "We need to turn it around. We're down on ourselves and that's why we got smoked."
The Kings have scored two goals or fewer in their past five games.
Captain Dustin Brown says his club must re-focus.
"Myself and the other team leaders, we need to kind of step it up in the right direction," he said.
St. Louis RW Ryan Reaves returned to the lineup after missing 17 games with a broken hand. ... The Kings have outscored their opponents by 15 goals in the first period this season. ... St. Louis G Jaroslav Halak missed the game due to the flu. He is listed day to day. ... St. Louis coach Ken Hitchcock recorded his 100th regular-season win with the Blues. ... Jones lost his third in a row after a franchise-record 8-0 start to his career. ... St. Louis RW David Backes, the third St. Louis player chosen to the Olympic team, missed his third consecutive game with an upper-body injury.