Manchester United are the most valuable team in sports at $2.23 billion (£1.43 billion), according to Forbes magazine's annual survey.
The Premier League team, owned by the same American family that owns the NFL's Tampa Bay Buccaneers, are ranked on top thanks to lucrative global sponsorship deals.
Real Madrid are in second place, at $1.88 billion (£1.20 billion). The New York Yankees and Dallas Cowboys are third at $1.85 billion (£1.18 billion). Rounding out the top five are the Washington Redskins at $1.56 billion (£1 billion).
All 32 NFL teams make the list of 50 most valuable teams with seven Major League Baseball teams earned spots.
The highest value for an NBA team belongs to the Los Angeles Lakers 35th overall. No NHL clubs made the survey, but two from Formula One racing were included: Ferrari and McLaren.