ST. LOUIS — David Backes scored at 9:04 of overtime on a shot that deflected off a Chicago defenseman, and the St. Louis Blues took the series opener 1-0 over the defending Stanley Cup champion Blackhawks on Wednesday night.

Backes’ shot got past Corey Crawford after bouncing off Trevor Van Riemsdyk’s skate. Defensemen Jay Bouwmeester and Alex Pietrangelo assisted on the winner.

Brian Elliott earned his first career playoff shutout. Elliott, who led the NHL with a .930 save percentage, made 35 saves to thwart a lineup led by scoring champion Patrick Kane and Jonathan Toews.

Lightning 3, Red Wings 2

TAMPA, Fla. — Nikita Kucherov scored twice and Alex Killorn snapped a third-period tie, lifting Tampa Bay past Detroit in Game 1 of the Eastern Conference series.

Ben Bishop had 34 saves for the defending Eastern Conference champions, who got the winner from Killorn less than two minutes after a potential go-ahead goal was waived off when Detroit coach Jeff Blashill successfully challenged that Tampa Bay was offsides before Victor Hedman scored.