What are the world's top ten spectator sports?

According to a 2010 survey the Top Ten Spectator (keyword) sports in the world by fan count are:

#1--Football (soccer), approximately 3.5 billion fans.

#2--Cricket, approximately 2.5 billion fans.

#3--Tennis, approximately 2.2 billion fans.

#4--Basketball, approximately 2 billion fans.

#5--Motor Racing.

#6--Horse Racing.

#7--Baseball.

#8--Track and Field.

#9--Golf.

#10--Boxing.