David Vyborny, Geoff Sanderson and Tim Jackman each had a goal and an assist for Columbus, which rallied from a 3-1 deficit. Jackman's points were his first in the NHL.
Chicago's Kyle Calder and Bryan Berard each had a goal and assist. Brett McLean also scored for the Blackhawks.
Columbus goalie Fred Brathwaite made 33 saves. Leighton made 25.
Oilers 7, Coyotes 2
In Glendale, Arizona, Ethan Moreau scored twice to cap a franchise-record five goals in a span of 5:38 to lead Edmonton over Phoenix.
Ryan Smyth, Shawn Horcoff, Adam Oates and Fernando Pisani had a goal and an assist apiece for the Oilers, who moved within seven points of idle Los Angeles for the Western Conference's final playoff spot. Marc-Andre Bergeron added a goal and Ales Hemsky had a pair of assists for Edmonton.
Jeff Taffe and Jan Hrdina scored for the Coyotes, winless in two games under interim coach Rick Bowness.
Phoenix, 2-10-2-2 in its last 14 and a Western Conference-worst 10-14-5-3 at home, has allowed 20 goals in its last four games.
Sharks 4, Penguins 2
In San Jose, California, Patrick Marleau had a goal and an assist and the Sharks handed Pittsburgh its 18th loss in 20 games.
Brad Stuart, Tom Preissing and Alexander Korolyuk also scored for San Jose, which improved to 8-1-1 over their last 10.
Konstantin Koltsov and Milan Kraft scored third-period goals for the Penguins, who became the first team to be officially eliminated from playoff contention.
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