Jonathan Toews scored on a breakaway at 7 minutes, 36 seconds of overtime Friday night, giving the Chicago Blackhawks a 3-2 victory over the Blues in St. Louis and a three-games-to-two series lead.
Marian Hossa and Ben Smith also scored for the defending Stanley Cup champions, who have won three in a row and can wrap up the first-round series at home Sunday. Four of the first five games in the series went to overtime.
T.J. Oshie and Alex Pietrangelo scored for the Blues.
All three of the Blues' home games went to overtime, and St. Louis won the first two.
Toews got behind the St. Louis defense on the winner and threw a couple of fakes at Ryan Miller before slipping the puck past the goalie.
Patrick Roy has shown all sorts of patience with his youthful squad this season.
That certainly won't waver now just because the Colorado Avalanche are in an offensive slump.
"This is a learning process," the coach said Friday. "I'm not going to throw them under the bus, because I'm their partner.
The Minnesota Wild have outshot the Avalanche, 78-34, in the last two games to tie the first-round series at two apiece heading into Game 5 on Saturday night.