Although the National Football League continues to dominate the U.S. sports landscape in terms of total sponsorship revenue, Major League Baseball gains bragging rights for the largest spending increase among the four major pro sports leagues in the most recent season.

Sponsorship spending on MLB and its 30 teams totaled $778 million in the 2015 season, a 12 percent increase over the previous year, according to IEG research. The spending increase was driven in part by seven new league sponsors including Esurance, DraftKings and Falken Tire.

The NHL posted the second-largest increase (9.2 percent) with the NBA in a close third (8.9 percent). Spending on the NFL totaled $1.15 billion in 2014, a 7.8 percent increase over the previous season. 

National Football League
2014 Spending: $1.15B
2013 Spending: $1.07B
Year-over-year increase: 7.8%

New League Sponsors (2014 Season)
New League Sponsors (2014 Season)

Major League Baseball
2015 Spending: $778M
2014 Spending: $695M
Year-over-year increase: 12%

New League Sponsors (2015 Season)
New League Sponsors (2015 Season)

National Basketball Association
2014-2015 Spending: $739M
2012-2013 Spending: $679M
Year-over-year increase: 8.9%

New League Sponsors (2014-2015 Season)
New League Sponsors (2014-2015 Season)

National Hockey League
2014-2015 Spending: $447M
2013-2014 Spending: $409M
Year-over-year increase: 9.2%

New League Sponsors (2014-2015 Season) New League Sponsors (2014-2015 Season)