Wrestling
Eating burritos
wrestling, at least if you play kidnaped on facebook.
The second most popular sport would be baseball. Although it is second for most popular SEEN, it is first for the most PLAYED sport.
Volleyball is the second most popular sport in the world.
Soccer (football) is the most popular sport in Mexico. See related questions for further details.
The most common sport anywhere in Mexico is soccer
It is the greatest sport ever invented and it should be the most popular sport in every country.
SOCCER!
soccer
volleyball
basketball