Didja hear: Mexico beat the U.S. 2-1 in a World Cup qualifier Sunday afternoon. How did Mexican fans behave during the match? ESPN reports:

Some Mexican fans responded by chanting "Osama! Osama!''

...For Mexico, the game was a measure of revenge for the United States' 2-0 win in the second round of the 2002 World Cup, a game that dented national pride. But that match was played in South Korea, not Mexico, where the Tricolores are 54-1-4.

A large banner in the upper deck proclaimed: `"El Gigante No Ha Muerto,'' or "The Giant Is Not Dead Yet.'' There was booing and whistling during "The Star-Spangled Banner'' and derisive chants whenever Kasey Keller took goal kicks.

The "Osama!" chants were prevalent during last year's U.S.-Mexico Olympics qualifying soccer match. Mexican fans also tossed plastic bags filled with urine on American players.

The bad blood is about more than just athletic competition. As the Christian Science Monitor made clear in a report from Mexico City, the spirit of reconquista and revenge animates the country's soccer fans:

The origins of this intense rivalry, explains fan Gerardo Gonzales, are historical - and he is not talking soccer history.

"Every schoolboy knows about 1848," he says, settling in for a lazy afternoon of serious soccer talk at a local cantina. "When they robbed our territory," referring to when Texas, California, and New Mexico were annexed to the US at the as part of a peace treaty ending the war between the two countries, "that was the beginning."

Talk about a grudge match.