Manchester United is the world most valued sport team

According to Forbes Magazine,Manchester Untied is the first sports franchise to be valued at more than $3billion.
Man U's enterprise value (equity plus debt) to $3.3 billion, the highest value of any team in the world.
The club’s shares have grown recently due to sponsorship deals with China Construction Bank and Kansai of Japan and a record $559 million deal with General Motors, who will be the club’s shirt sponsor for the 2014-2015 season. The team, currently the EPL’s leaders, is also projected to increase earnings with progress in the UEFA Champions League this year and monies from the EPL’s lucrative world wide TV deals.

The second most valuable sports team in the world are the NFL’s Dallas Cowboys, worth $2.1 billion