The Predators lost Kevin Fiala to an ugly leg injury in the second period and blew a 3-1 lead before Fiddler poked a loose puck by Jake Allen in the third. It was the fifth career playoff goal for the 36-year-old Fiddler, who did not play in Nashville's first-round sweep of Chicago.
Game 2 is Friday night.
The Predators jumped in front when Wilson redirected a slap shot from Subban past Allen for a power-play goal at 11:24 of the first. It was Wilson's first playoff game this year after he missed the first round because of a lower-body injury.
It was still 1-0 when Fiala was hit by Blues defenseman