San Francisco 49ers: Has the Team Lost an Unusual Number of Veterans?

With Anthony Davis' retirement and the Andy Lee trade, the San Francisco 49ers are continuing a radical and dramatic overhaul of their roster.  As it stands at the moment, only 16 players on the roster predate the 2013 offseason: Vernon Davis, the longest-tenured 49er now that Andy Lee has retired, was taken with the sixth overall pick in the 2006 draft. Joe Staley was taken with the 28th overall pick in the 2007 draft. Ahmad Brooks was picked up off waivers from Cincinnati in 2008. Alex Boon...