San Francisco 49ers defensive lineman Glenn Dorsey has signed a two-year contract extension through the 2016 season. Dorsey is entering his second year with the 49ers, but could miss a majority of the 2014 campaign with a biceps injury he suffered during training camp in early August. "Glenn is a true pro who has quickly become a valued contributor to our organization both on and off the field," said 49ers general manager Trent Baalke. "He is a quick study and a very good football player that has earned this extension, and we look forward to his future contributions." Source: The Sports Network