They lost Game 2 in double overtime Saturday but now head into Monday night's Game 3 in San Jose aiming to take back home-ice advantage.
Marchessault gave Vegas a 2-1 lead with another power play goal less than four minutes later after Hertl was whistled for roughing Neal.
Jonathan Marchessault then proceeded to give his team the all important lead with yet another power play goal at 13:09. Kane sniped a shot into the short side top corner, beating Marc-Andre Fleury's glove hand to cut the Sharks' deficit to 3-2. Karlsson is riding a four-game point scoring streak.
The San Jose Sharks evened their series with the Las Vegas Golden Knights at a game apiece with a double overtime victory last game. Vegas challenged that Fleury was interfered with by Logan Couture, who nudged him on the edge of the blue paint, but the goal stood.
DeBoer's thrown Tierney on to the top line before, primarily late in games when the Sharks trailed and needed a goal.
This series has had goals get waved off and shots that looked like no goals get called goals.
"I believe our game's there and I think everyone in here would tell you that", captain Joe Pavelski said. "We can't take those kinds of penalties".
It was Karlsson's fourth goal of the playoffs thus far, and it's probably safe to say that Jones isn't the biggest fan of having to face the unsafe forward.
Karlsson notched his second goal when he took advantage of a turnover forced by Reilly Smith, overlooked passing it back to Smith, skated in and beat Martin Jones from the circle to put Vegas up 2-0 just 26 seconds into the second period.
"We did some good things, but our game was not at a playoff level like the other team that had just played in a Game 7, and that's what we have to bring (Monday night) or it's going to be a long series for us".
San Jose looked like its round-one self in the first-half of the opening period, making Vegas net-minder Marc-Andre Fleury scramble constantly to record 16 saves in the first 20 minutes.
Over on the other bench, San Jose is 50-38 straight up (SU) and has earned 4.8 units for moneyline bettors this year.
Following their first loss of the postseason, Golden Knights coach Gerard Gallant is expected to make a change to his lineup for tonight's game in San Jose. As an away team this season, the Knights are 24-19 SU.
Unlike Game 2, Vegas was victorious in Game 3. But, for the moment, we should congratulate Vegas for being in the mix with the established sides, and perhaps be a little envious of the savvy punters who backed them at 200/1 at the start of the season.
Evander Kane pulled one back for San Jose before Tomas Hertl forced overtime with two minutes left in the third. The Knights lead the series 2-1.
In less than 24 hours, fans in the desert should know whether the Golden Knights are coming home on Friday with a chance to close out the series or whether it will be a best out of five.
Colorado went 67-95 in its first year, finishing only 37 games out of first place. The line of thinking went something like this: that was cute, now let's see how this band of misfits handles a hard-physical series against a two-time Stanley Cup champion. Puck drop is scheduled for 10:30 p.m. ET.