Vancouver carried a 1-0 lead into the third period behind Auld, who finished with 34 saves, and a power-play goal by Brendan Morrison in the second period.
Ott got the Stars on the board at 12 minutes 17 seconds of the third period when Sergei Zubov's shot deflected off Mathias Tjarnqvist and then Ott's leg before getting past Auld for Ott's fourth goal this season.
Ottawa 3, Washington 1 -- Chris Phillips, Patrick Eaves and Peter Schaefer scored, and Dominik Hasek made 23 saves to lift the Senators at Washington.
The Senators played without leading scorer Daniel Alfredsson, who sat out his second consecutive game because of a cracked rib.
Carolina 4, Atlanta 3 -- Cory Stillman had two goals and two assists to run his point streak to nine games, and the Hurricanes rallied from a two-goal deficit to win at home for the first time in three games against the Thrashers this season.
New York Islanders 4, Florida 3 -- Wade Dubielewicz played only 2:24 but earned his second NHL victory when Mark Parrish scored in overtime at Uniondale, N.Y., to end the Islanders' five-game skid.
The Panthers dropped to 1-7-2 in the second of consecutive games.
Nashville 4, St. Louis 3 -- Vernon Fiddler scored the go-ahead goal at St. Louis and had the first two-goal game of his career, helping the Predators end a four-game losing streak.
Tomas Vokoun made 18 saves after replacing backup Chris Mason, who gave up goals on the first two shots by the Blues, made one save and was removed after only 4:40.
The Predators are the only team with no regulation losses against a team from its division.