It was the first game of the defender in Otavulo, since he was traded on September 13 after playing nine seasons for the Senators.
"I think I've done a good job, myself, trying to stay focused on the game," said Karlsson. "And at the same time, trying to experience the good things that happened here … It was nice to play before these fans again."
[WATCH: All Sharks vs. Senators highlights]
Mikkel Boedker, who played for San Jose the previous two seasons, had goals and three assists for the Senators (12-12-3), who won three straight games.
"We've made a really good job to play strong in the [defensive] zone and not forgetting our offensive capabilities, "Boedker, ahead, said" We have a lot of high talent there and we use it. "
Joe Thornton and Barclay Goodrow pointed out, and Martin Jones made 21 safe for the Sharks (12-10-5), who lost their fourth straight game and six straight on the road.
Video: SJS @ OTT: Senators welcome Karlsson to Ottawa
"We're struggling now," said Karlsson. "You will go through periods of this all year long. We will now pass through it and we will have to sort out many things."
Karlsson played 24:55 and had nine shots on target.
"I think we're disappointed for Erik," said Shark coach Pete DeBoer. "I think we're disappointed for ourselves. This was a great game for us. We wanted to resume after losing [at the Toronto Maple Leafs 5-3 Wednesday], and the game ran away from us. "
Anderson made 27 safe in a 3-0 win against the New York Rangers on Thursday.
"We've seen ourselves grow in the last two games," Anderson said. "The last game against the Rangers, we were outstanding for 60, and tonight again, outstanding for 60 minutes. We start to roll some moment together, and playing in the right direction, playing the right way, and I think our Children also get a reward, we've won [six] goals. "
Ryan Dzingel gave the Senators a 1-0 lead at 7:30 a.m. from the second period. Ben Harpur won his first NHL goal to make it 2-1 at 12:56, and Boedker scored off to make it 3-1 49 seconds later.
Video: SJS @ OTT: Dzingel clears a bounce to open scoring
"It lasted a bit of time," said Harpur, a defender who played his 60th NHL game. "It was kind in the back of my mind. I'm not looking to win goals, at all, that's not really part of my game, but to get that first help, of course."
Thornton's one-feared cross-crossing Pauseus on an open net on the power game to tie it 1-1 at 9:49.
Mark Stone won 4-on-1 to make it 4-1 at 4:03 from the third period. Magnus Paajarvi won an empty net goal at 14:52 for 5-1 lead. Pointed point Brenden Dillon to cut it at 5-2 at 18:00. Ryan exploded Cody Ceci Tap shot to make it 6-2 with 59 seconds on the left.
"If you allow five, score six," Sharks defender Marc-Edouard Vlasic said. "If you [allow] six, score seven. If you get a chance of power, bury the power to return to the game, and that will not happen now. "
Video: SJS @ OTT: Calculation is far away, pots-power target
Senators forward Chris Tierney and defender Dylan DeMelo It was part of the Karlsson business. Tierney had help playing 13:53, and DeMelo played 22:58. Boedker was part of postseason business forwards Mike Hoffman.
"All three of these guys were good friends when they were in San Jose," Shark captain Joe Pavelski said. "It seems they're all welcome here, so we're happy for them, of course. It's always a bit blurred to play them for the first time."
They said it
"It's hard to stop it now. We find ways to lose it. It's just stuffed here or there, and then something happens. We have passed through these games, so we'll come back to Finding ways to start the game with goal and get the lead and try build on it. "- Captain of Sharks Joe Pavelski
"It was fun to play against [Karlsson], fun to fight against him. When the stick was on his stick, you never knew what he would do to it, whether it was a fast shot, passes through the boat or crosses the seam or a kind. Shifty player. It was great to stay there on the ice with him. "- Senators goal Craig Anderson
You need to know
Senators defending Thomas Chabot reached his 30th point (six goals, 24 assists) in his 27th game. The only opponents of Otaro to reach 30 points in fewer games are Wade Redden (24 games in 2005-06) and Karlsson (26 games in 2015-16). … In the Karlsson's business, the Senators also received a preview point Francis Perron and also sent ahead Rudolfs Balcers and Joshua Norris, a condition first round election in the 2019 NHL Draft or 2020 NHL Draft and a second round election in the Draft 2019 to the Sharks.
Sharks: In the Montenegro of Canada on Sunday (7 p.m. ET; SN, SN1, RDS, NBCSCA, NHL.TV)
Senators: At Montreal Canadiens on Tuesday (7:30 p.m. ET; TSN2, RDS, TSN5, NHL.TV)
Video: Six different Senators score in 6-2 Sharing of Sharks