Garrison's goal salvaged a win for the Panthers, who blew a 3-1 lead with less than 8 minutes to go in regulation.
Scott Clemmensen turned aside 35-of-38 shots to notch the victory.
Simon Gagne scored with 2 minutes remaining in regulation to knot the score and assisted on two goals for the fifth-seeded Bolts, who got 23 saves from Mike Smith.
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