With Jonathan Quick (37 saves) pulled for the extra attacker, Matt Roy tied it 3-3 with 2:01 left in the third period for Los Angeles (15-18-3), which has a season-high five-game point streak (4-0-1) and a season-high four-game road point streak (3-0-1).
"You think about the score," said Kopitar, who scored on the rush from the top of the left face-off circle, "it's 2-2 after two periods, you're playing obviously a very, very good game in Boston and you're on the road. So there's nothing to be discouraged about, and they went out, they got on the board early in the third period], but we just kind of hung in there, hung in there, and it was obviously a good shot from [Roy], and we were able to tie it up, and eventually we were able to win it in OT."
***[WATCH: [All Kings vs. Bruins highlights]*
Tuukka Rask made 23 saves for Boston (21-7-7), which lost for the sixth time in its past seven games (1-4-2) after an eight-game winning streak.
"We're going to look at things," Bruins coach Bruce Cassidy said. "We switched some lines up again. Listen, there's 82 of these, I thought we certainly played well enough to win. Not very happy only getting one point tonight, some nights you're satisfied. But in terms of the process part of it, there were better things than there was, say, two weeks ago."