New York Yankees of major league baseball
It depends on what you mean by lucrative. The most valuable sports franchise is Manchester United. (Around 1.7B)
Manchester United
Dallas Cowboys.
http://espn.go.com/sportsbusiness/s/forbes.html It lists all that you need to know.
manchaster united
Man U
Dallas
Manchester United
Dallas cowboys
IPL
The New York knicks are the most valuable franchise in the NBA currentley.