The injury occurred in the Oilers' 4-2 win over the Philadelphia Flyers, as McDavid got tangled up with Michael Del Zotto and Brandon Manning. The mix-up took place behind the Flyers' net, where McDavid would go down hard into the boards.
The rookie was slow to get up after the collision, and was seen holding his shoulder as he skated to the bench. He would miss the remainder of the game and was seen wearing a sling on his left arm.
The diagnosis was announced on Wednesday, and it was also revealed that the young star will need surgery. Head coach Todd McClellan tried to encourage McDavid to keep his head up, as the the 18-year-old was visibly frustrated by the incident. McClellan went on to say that McDavid is still considered a part of the group, and the team cannot wait to have him back on the ice.
Oilers' legend Wayne Gretzky was watching the game when the injury occurred, and said that he knew the injury was serious right when McDavid went down.
The Oilers' young rookie leads all rookies with five goals and seven assists in 13 games. He is ranked second on the team in scoring, and was named the October Rookie of the Month. Sadly, McDavid's focus will have to shift to healing up the first major injury of his career, as the team remains optimistic to having him on the ice again this season.