SOCCER!
girls
soccer (futbol)
cricket!?!?!?!?!? Fishing has the most participants.
Soccer (football) is the most popular sport in Mexico. See related questions for further details.
Bmx and soccer or tennis
The Olympics are comprised of many different sports. Based upon participation the sport that is the most popular is cycling.
The most common sport anywhere in Mexico is soccer
baseball
It is the greatest sport ever invented and it should be the most popular sport in every country.
Wrestling
soccer
Eating burritos