Ranking fan bases who were the most passionate about their teams or superstars they follow (yes, this is a list where Taylor Swift and the Dallas Cowboys can co-mingle), FanSided picked the top 250. Included in the Fandom 250 list were the Houston Astros, St. Louis Cardinals, Chicago Cubs, Los Angeles Dodgers, San Francisco Giants, Cleveland Indians, New York Mets, Washington Nationals, Boston Red Sox, Kansas City Royals and New York Yankees. Colorado joins their fellow National League West teams in San Diego and Arizona as not being represented.
As a side note, yes, the Denver Broncos were included in the Fandom 250 last year and will likely be on the list again this year.