Toughest Single Season NFL Records to Break

We go into every NFL season anticipating at least a few records to get broken. Calvin Johnson of the Detroit Lions stole the show throughout 2012, as he shattered Jerry Rice's single season record with 1,964 receiving yards. There are, however, records that are virtually impossible to break. One of the more recent set this century is from Tom Brady of the New England Patriots. In addition, we'll rewind all the way back to the 1952 NFL season with Dick "Night Train" Lane. Records can only stand f...