The host Lightning, who advanced by beating Original Six clubs Detroit, Montreal and New York, lost for the first time in the 2015 postseason after scoring first. Game 2 at Amalie Arena in Florida will be on Saturday at 7 p.m. (NBC).
Duncan Keith (Michigan State) assisted on the tying goal for Chicago, which bested Nashville, Minnesota and Anaheim to advance to the Final. Ben Bishop (Maine) stopped 19 of 21 Chicago shots Wednesday, while Killorn tied for the game lead with five shots on goal.
The Blackhawks are seeking their third Cup in six seasons, while the Lightning is pursuing its first Cup in 11 years.