Otherwise, they'll head back to Pittsburgh for a Game 5 on Thursday trailing 3-1 in the series with the Penguins one win away from raising the Stanley Cup.
"They're going to respond," Couture said. "They're going to bring probably their best game. Any time you lose, you want to come to the rink the next day and be better. That's what we expect from them."
Although the Sharks earned their win Saturday, they feel there's plenty of room for them to improve too. That was a topic of discussion in their meeting Sunday.
"We just said we can keep getting better," said center Chris Tierney, who assisted on Donskoi's overtime goal. "We can execute a little better on our breakouts in zone, holding onto pucks more, create more O-zone time. We still have another level we think we can get to, and that's a positive for our team."
The Sharks know they're going to need to reach that next level if they're going to win this series and the Stanley Cup. They might have to do it without forward Tomas Hertl, who remains day-to-day because of a lower-body injury.
Getting more shots through to Murray would help after the Penguins blocked 38 attempts in Game 3. Coach Peter DeBoer believes the Sharks also can do a better job of limiting the number of shots the Penguins get.
They had 42 on Saturday, compared to 26 for the Sharks.
"I think both teams are going to raise their level next game," DeBoer said. "It's a critical game. It's one of those crossroad type games, I think, so I anticipate both teams to come out [hard]. I think it should be the best game of the series. I think every game's gotten a little bit better and I think the next one will be the best one so far."