There are many ways in which a player's success in the NFL is measured. One of the most obvious is a comparison of statistics. Each week during the NFL's regular season featured updated Top 20 lists for four main statistical categories.

Here, thanks to the help of Elias Sports Bureau, is an expanded look at Top 20 leaders in multiple NFL statistical categories. Check out where today’s stars compare to NFL greats at the start of the 2013 NFL Season.

Coaching Victories
Combined Net Yards
Kickoff Returns: Average
Passing: Ratings | Yards | TDs | Completions | Attempts
Punt Returns: Average
Receiving: Receptions | Yards
Rushing Yards
Scoring: Points | Touchdowns

Top 20 lists at the start of past seasons: 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006