Sheldon Souray was injured in Saturday's game against Vancouver. ((Richard Lam/Canadian Press))

Defenceman Sheldon Souray, the Edmonton Oilers' big off-season acquisition, will miss the next three to four weeks after separating his left shoulder, according to a report in the Edmonton Journal.

Souray, who signed a five-year, $27 million US contract in the summer, suffered the injury in Saturday night's 4-1 loss to the Vancouver Canucks when he fell to the ice during a third-period fight with Vancouver's Byron Ritchie.

Souray, a six-foot-four, 233-pound native of Elk Point, Alta.,enjoyed a career year last season with theMontreal Canadiens, after scoring 26 goals and picking up 38 assists.

Nineteen of his goals came on the power play, which seta new NHL record for power play goals by a defenceman.

Souray has one goal and one assist in six games this season.