Leafs forward Robertson to undergo season-ending shoulder surgery

Toronto Maple Leafs forward Nick Robertson is set to undergo season-ending shoulder surgery, the team announced Monday.

The 21-year-old is expected to be out of action for six months.

Robertson sustained a shoulder injury after taking a hit from Kings defenceman Matt Roy in the first period of a 5-0 win over Los Angeles on Dec. 8.

He was initially ruled out six to eight weeks, with the plan at the time to go through rehab and avoid surgery.