St. Louis is 1-4 in the 2017 Stanley Cup Playoffs when allowing the first goal and 4-0 when scoring first.
"We've got to find a way to put the puck in the back of the net," captain Alex Pietrangelo said. "[Predators goalie Pekka Rinne] making good saves, he's playing well. Both goalies are playing well. We've just got to find a way to get a couple behind him. The power play's got to be better."
The Blues were 0-for-2 on the power play and are 2-for-24 in the playoffs, 1-for-9 in this series.
"That's what we have to look at right now, whether it's combinations, whether it's ... obviously power play, we're going to have to switch that up right now," coach Mike Yeo said. "I think more than anything, we have to make life tough on their goalie. I don't think we have. When we do, we see some scrambles, we see some situations where I think we can get maybe a little bit more chasing things, but I think we can do a better job of that."
Yeo said if the Blues can bring this kind of effort the rest of the series, he likes their chances to come back.
"I'm really proud of what our guys brought to the table tonight," Yeo said. "The intensity-wise, the way they were committed, the way that they played for each other. It was a real tough, tight-checking game both ways. I think both teams were having to fight their way through it and I think we were doing a good job of that.
"It's frustrating to be down the way we were competing and the way we were engaged in the game. Then we went down with the penalty call and it took us a while to regroup after that."