CP) -- The Edmonton Oilers got serious about winning this year, adding a pair of defencemen Thursday that will help the club in its stretch drive and hopefully into the playoffs.GM Kevin Lowe sprung a pair of deals to net offensive blue-liners Jaroslav Spacek and Dick Tarnstrom."We've been wanting to upgrade our defence pretty much all year, we had even talked about it in the summer," Lowe told The Canadian Press. "It just so happened that both deals came together around the same time. You never have enough good defencemen."The Oilers first acquired Tarnstrom, who will help their power play, from the Pittsburgh Penguins in exchange for forward Jani Rita and defenceman Cory Cross. Then Lowe acquired Czech Olympian Spacek from the Chicago Blackhawks for forward Tony Salmelainen.
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