Vladimir Tarasenko and St. Louis were in trouble Saturday before a vicious hit by Chicago defenceman Brent Seabrook provided an opening for the Blues.
That little crack was all St. Louis needed to put another dent in the Blackhawks' bid for a second straight Stanley Cup title.
Seabrook's blow to the head of David Backes led to a 6-on-4 power play for St. Louis that ended with Tarasenko's tying goal with 6.4 seconds left in regulation, and low-scoring defenceman Barret Jackman ended the game with a drive through traffic, giving the Blues their second straight 4-3 overtime victory over the Blackhawks and a 2-0 series lead.
``Those seeing-eye shots, I couldn't believe it went in,'' Blues coach Ken Hitchcock said.
St. Louis took the opener in triple-overtime and fought off a Chicago rally in a game that began less than 39 hours later.
Game 3 is in Chicago Monday night.
Chicago Blackhawks goalie Corey Crawford tossed his equipment around in the locker room before meeting with reporters. He said he was screened a bit on the game-winner, adding, ``I had my pads together, but there was a little space there and it just kind of squeezed through.''
Addressing the tying goal, Crawford said: ``It's frustrating, but whatever. I'm not going to cry about it. We've just got to work harder.''
Jackman is the longest-tenured Blues player in a career dating to 2002, and totalled three goals and 15 points in the regular season. He has two career playoff goals, both in overtime and both giving the Blues a 2-0 series lead, also stunning the Kings in the first round in 2012 _ although the Kings recovered to take four straight.
``We were taking some big hits and kept our composure,'' Jackman said. ``And in the end, one squeaks in.''
St. Louis rallied after Seabrook received a five-minute major and game misconduct penalty for his hit on Backes that could lead to a suspension for one of Chicago's top defencemen. The Blues captain had to be helped off the ice, went straight to the locker room and did not return for the extra period.
``I have no thoughts on the hit, that's up the league,'' Hitchcock said. ``How do you think he is? Not great. Let the league deal with it.''
Seabrook said he wasn't trying to hurt Backes.
``I feel bad seeing a guy like that on the ice,'' Seabrook said. ``I've been there myself. I wasn't trying to target his head or do anything like that.''