ACL injuries are down, the NFL has told its Health and Safety Advisory Committee. In a memo to the committee sent earlier this week and obtained by The Associated Press, the league said research showed there were 30 ACL injuries in games through the preseason and first 13 weeks of the schedule. Anterior cruciate ligament problems are the most severe knee injuries. There was an increase in medial collateral ligament injuries (MCL), from 74 in 2012 to 89 in games this season through 13 weeks. More...