second period

Quinton Byfield scored at 3:37 of overtime and the Kings beat the Ottawa Senators 6-5 on Thursday night after blowing a four-goal lead in the third period.

Byfield beat goalie Samuel Ersson with a snap shot from the high slot, with Drew Doughty picking up his third assist of the night on the play.

Erik Haula tied it for the Kings (4-6-2) on a first-period power play and Trevor Moore, Mikey Anderson, Joel Armia and Artemi Panarin scored in the second to make it 5-1. Panarin capped the run on a power play after Ottawa’s Hayden Hodgson was tossed for boarding defenseman Brandt Clarke.

Clarke missed the rest of the game because of an upper-body injury.

Ottawa roared back in the third, with Shane Pinto tying it 5-5 with 1:40 left and Ersson off for an extra attacker.

Dylan Cozens scored twice in the period and Drake Batherson also connected. Cozens and Batherson struck in a 33-second span, and Cozens cut it to a goal with 7:26 remaining. Tyler Kleven opened the scoring for Ottawa (8-5-1) in the first period.

Darcy Kuemper made 17 saves for the Kings.

Jonas Johansson stopped 12 of 16 shots before giving way to Ersson in the second. Ersson made 20 saves on 22 shots.

Up next for the Kings: vs. the Buffalo Sabres at Crypto.com Arena on Saturday.

LAS VEGAS — Mitch Marner scored a power-play goal from the high slot at 2:41 of overtime to give Vegas a 2-1 victory over the Kings on Saturday on a night in which the Golden Knights paid tribute to their past.

Trevor Connelly scored the other goal for the Golden Knights. Connelly, Marner and Mark Stone each had two points, with Stone getting both of his on assists. Carter Hart made 26 saves.

Artemi Panarin scored for the Kings and Darcy Kuemper made 30 saves.

Vegas (5-1) is off to a quick start this season, and the Kings (0-2-2) are still searching for their first victory.

Each club swapped power-play goals in the second period, with the 20-year-old rookie Connelly scoring after Stone’s pinpoint cross-ice pass. Panarin answered with a shot from the high slot later in the period.

In overtime, the Golden Knights quickly took advantage of a tripping penalty on Kings center Scott Laughton. Marner skated from near the blue line toward the slot, scoring just seven seconds into the penalty.

The Golden Knights, in their 10th season, paid tribute throughout the game to their inaugural “Misfits” team that reached the Stanley Cup Final. Gerard Gallant, who coached that team, was in attendance along with several players from that squad. Fan-favorite Ryan Reaves, who retired last month after 16 NHL seasons, cranked the pregame siren.

Referee Furman South briefly went down to the ice early in the third period when Vegas center Nic Dowd collided with him. South got up holding his midsection, but remained in the game.

Up next for the Kings: vs. Edmonton at Crypto.com Arena on Tuesday night.