A.J. Jenkins beefs up for sophomore season with 49ers

Daily 49ers blog for NBC Bay Area website: Last year's No. 1 pick A.J. Jenkins has made a heavyweight commitment to get stronger this offseason so he can get on the field. http://www.nbcbayarea.com/news/sports/Jenkins-Appears-Ready-to-Fight-For-Receiver-Spot-207868271.html