Why was the Mexican national anthem played before the recent Manny Pacquiao-Floyd Mayweather world title fight? It’s a question many boxing pundits don’t seem to have an answer to, given the fighters were from the Philippines and the United States. The ringside announcer implied it was because of the Cinco de Mayo holiday, but that was actually three days later. A more plausible reason, perhaps, was that Mexican beer Tecate was sponsoring the fight to the tune of US$5.6 million.  Money talks, or rather sings.