LOS ANGELES -- Sean Monahan scored 1:02 into overtime to give the Calgary Flames their third straight win, 4-3 against the Los Angeles Kings at Staples Center on Wednesday.
Monahan got to the front of the crease and beat goalie Jonathan Quick with a one-timer off a TJ Brodie pass.
Jaromir Jagr played his first game for Calgary after signing a one-year contract last Wednesday. The 45-year-old forward did not have a shot on goal and was minus-1 in 13:38.
[WATCH: All Flames vs. Kings highlights]
"I didn't feel very well," said Jagr, whose 1,914 points are second in NHL history behind Wayne Gretzky's 2,857. "But I expect that. I'm glad it's behind me, so hopefully next game I feel better."
Depite their 3-1-0 start, coach Glen Gulutzan is concerned the Flames are playing like they did at the beginning of last season, when they won one of their first six games (1-4-1) and were outscored 26-18.
"We haven't given up this much since last year at this time and we need to clean it up," Gulutzan said. "Obviously, points are precious in this league and you take them, but we have a lot of work to do to get our game where it needs to be."
Video: CGY@LAK: Monahan nets game-winning goal in OT
Calgary took a 2-0 lead but had to rally after Los Angeles went ahead 3-2 on tip-in goals by Dustin Brown 14 seconds into the third period and at 1:58.
Matthew Tkachuk, who scored twice for his second multigoal game in the NHL, beat Quick with a wrist shot between the goalie's legs to tie it 3-3 at 10:59 after a turnover. It was the first goal allowed by the Kings in the third period this season.
Michael Frolik had a goal and an assist, Johnny Gaudreau had two assists, and Mike Smith made 42 saves for Calgary.
Anze Kopitar had a goal and an assist for the Kings (2-0-1), who have not started a season with three straight wins since 2002-03. Quick made 33 saves.
After Tkachuk (3:56) and Frolik (7:47) scored in the first period to put the Flames up 2-0, Kopitar scored at 15:44 of the second period to get the Kings within 2-1.
Brown, who had an assist on Kopitar's goal, has five points (three goals, two assists) this season, all in the past two games.
"I think he's excited about being back on track," Kings coach John Stevens said. "He's excited about trying to prove that he can still be a good player in the League and he's playing like it."
Video: CGY@LAK: Tkachuk wires second goal to even game at 3
Goal of the game
Tkachuk's first goal was all grit, knocking in the rebound of his wraparound attempt for a power-play goal.
Video: CGY@LAK: Tkachuk jams home PPG to open scoring
Save of the game
Smith used his blocker to turn away Tyler Toffoli's shot from the slot at 4:19 of the third period and give the Flames a chance to regroup after they fell behind for the first time. "Once again, I thought it was our goalie that bailed us out of here," Gulutzan said.
Video: CGY@LAK: Smith makes blocker save to stone Toffoli
Highlight of the game
Gaudreau made a pass between Doughty's legs to set up Frolik's goal for the first of his two assists.
Video: CGY@LAK: Frolik buries Gaudreau's sweet dish
They said it
"You could just see when he has the puck not many people are going to take it off him. He makes great little plays and uses his body so well." -- Flames forward Matthew Tkachuk on Jaromir Jagr
Video: Jagr discusses his debut after a 4-3 OT win
"If you're going to get out-chanced 17-10 every night, 18-11, you're not going to win many of those games. The League will put you in your place, so we have to find our place and nail it down." -- Flames coach Glen Gulutzan on allowing more than 40 shots for the third time this season
"I just think we did a better job of getting traffic. [Coyotes goalie Mike] Smith sees the puck. He's a big goalie, and he makes saves, hangs on to pucks. Obviously in those two goals to start the period we did a better job of getting pucks to the net. But just overall pace, taking ice that was there, thought process I thought was a little slow to start the game." -- Kings coach John Stevens on their rally from down two goals
Need to know
Gaudreau has seven points (one goal, six assists) during a three-game point streak. … Kings forward Alex Iafallo had an assist for his first NHL point. … It was the eighth overtime goal of Monahan's NHL career, a Flames record. ... It was Brown's first multigoal game since he scored twice in a 6-2 win at the Arizona Coyotes on Feb. 2, 2016. ... Kings forward Kyle Clifford left the game at 6:33 of the second period with an upper-body injury after Flames defenseman Michael Stone hit him into the boards in the right corner of the Calgary zone. Stevens had no update after the game.
Flames: Host the Ottawa Senators on Friday (9 p.m. ET; SNF, RDS2, TSN5, NHL.TV)
Kings: Host the Buffalo Sabres on Saturday (10:30 p.m. ET; FS-W, MSG-B, NHL.TV)
Video: Monahan, Tkachuk power Flames past Kings in OT, 4-3