The Senators never led, but came from a goal down three times. Tampa Bay persevered, however, and moved into a tie with Boston for the lead in the Atlantic Division.
Tyler Johnson scored shorthanded for the Lightning in the first period, B.J. Cronbeen put a deflection past Craig Anderson in the second and Ondrej Palat tallied 5:31 into the third period.
Ben Bishop made 33 saves before turning in a perfect shootout. Anderson gave up three goals on 38 shots in regulation and overtime.
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