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Nadal tops Federer in Wimbledon thriller
With the contest tied 1-1, Lundqvist eased a shot past Chris Osgood for his second goal in the post-season.
It trimmed the Stars' deficit to 3-2 with game 6 in Dallas on Monday night.
They lost the first two games in the best-of-seven series.
Detroit's Trevor Daley scored at 9:21 of the first period and goaltender Marty Turco made 38 saves on 39 shots.
It was Turco's first-ever victory at Detroit's Joe Louis Arena.
Jiri Hudler's goal on the power play at 15:30 of the first produced the tie while Osgood was beaten twice on 21 shots.
If a seventh game is needed, it will be played in Detroit next Wednesday.