Dallas Cowboys overtake Real Madrid to be 'most valuable' team

Video caption, Dallas Cowboys beat New York Giants with seven seconds remaining

Dallas Cowboys have overtaken Real Madrid as the world's most valuable sports team, according to

Forbes' annual survey of National Football League teams' valuations put the Cowboys at 拢2.6bn.

It means the American Football side go above Real Madrid, who had topped the magazine's annual poll of the world's most valuable franchises in July.

The Spanish club now trail the Cowboys by 拢500m according to the new figures.

Last year the Cowboys' revenue was 拢402m, a record for a US sports team.

Forbes also puts the Cowboys' rise to the number one spot down to the "shrewd" marketing of owner Jerry Jones and the revenue from their home ground, the AT&T Stadium.

The team have the highest NFL average attendance (90,000) and the stadium brings in 拢78m in revenue from matchday tickets every season and 拢19m from other events.

The Cowboys have not reached the Super Bowl for 19 years but this is the ninth consecutive year that the Cowboys have been the most valuable NFL team.

The average NFL team is now worth 拢1.3bn according to Forbes, a 38% increase on last year.

Forbes say one reason is the revenue from their TV deal which last year saw the 32 teams share 拢2.9bn in national broadcasting revenue.