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San Francisco 49ers: Kwon Alexander out for the season with torn pectoral

The San Francisco 49ers have been dealt a huge blow with the announcement that linebacker Kwon Alexander will be sidelined for the remainder of the season with a torn pectoral.

As first reported by NFL Network’s Ian Rapoport, Alexander is set to undergo season-ending surgery on his pectoral muscle and will be placed on the injured reserve.

The injury was sustained in the fourth quarter of Thursday night’s 28-25 victory over the Arizona Cardinals. Alexander sustained a massive blow to his chest midway through the fourth and the 49ers wasted little time declaring him out for the rest of the game.