San Francisco 49ers inside linebacker NaVorro Bowman is having surgery Tuesday to repair a torn ACL in his left knee. Bowman posted a photo of himself in a hospital gown on his Instagram account Tuesday morning with the caption, "Time for surgery." Read more http://espn.go.com/nfl/story/_/id/10402195/navorro-bowman-san-francisco-49ers-undergoes-knee-surgery