Review of NFL Football: A History of America's New National Pastime
Soccer has overtaken ice hockey to become the fourth most popular sport in the US
When will the NBA overtake the NFL, if at all? : r/nba
MLS owners predict league will surpass MLB, Premier League - The San Diego Union-Tribune
Trading Card Wars Escalate With Panini's Antitrust Lawsuit Against Fanatics - WSJ
Which one is more popular in America between NBA and NFL? - Quora
Fantasy plays: Players to start and sit for NFL Week 1
The 'Big Five' in North American Pro Sports
Soccer has overtaken ice hockey to become the fourth most popular sport in the US
US: NFL puts on the best show, according to Americans
The Most Popular Sports in America By Each State - FanBuzz