The best-of-7 series is tied 1-1 with Game 3 at Nashville on Sunday (3 p.m. ET; NBC, TVA Sports, SN).
Tarasenko, who had 20 goals in 39 playoff games prior to Friday, scored a first-period power-play goal to tie the game 1-1, his first in the past 64 opportunities in the playoffs dating to Game 4 of the 2016 Western Conference First Round against the Chicago Blackhawks. He then scored the game-winner with 3:51 remaining in the third period.
"You can't score every game, but if you don't score some games, you need to help your team," Tarasenko said. "... You need to do defensive stuff and show the teammates your attitude. Just being a good teammate.
"It's playoffs and I don't really care who scores and [doesn't] score. We just need the wins to win the Cup."
Yeo said there have been times when other players have contributed to the Blues without scoring.
"We went through it earlier in the year with [Jaden Schwartz], where he was playing incredible hockey and the puck wasn't going in," Yeo said. "Sometimes that happens. Hopefully this is similar to that, that once the first one went in, then [Tarasenko] broke out, and now all of a sudden, what we're saying is he's got three goals in his last three games, which I think we'd all be pretty happy with. It's more than that. It's the way he's played through it. You see him on the ice late in the game with the goalie pulled, you see him diving to break up a play, and he's doing things that winners do."