It’s becoming quite dangerous to attend Major League Baseball games these days, and not just because of the unclean concessions.

Friday night, a couple of 18-year-old Giants fans at AT&T Park got into a post-game argument - resulting in the death of one fan & manslaughter charges against another.

The SAN FRANCISCO CHRONICLE reports on what happened between Anthony Giraudo and Taylor Buckley:

Giraudo and his friends were leaving a game between the Giants and the Philadelphia Phillies about 9:45 p.m. Friday when Giraudo got into an argument with a group of Carlmont High students beyond the gates in center field, according to police and Giraudo’s relatives and friends.

Acquaintances said Giraudo, a first-year student and baseball pitcher at Cañada College in Redwood City, had been sticking up for a female friend who was being harassed by one of Buckley’s friends. Buckley punched Giraudo once, knocking him to the ground, police said.

Giraudo’s head hit concrete, and he died the next day from brain injuries.

Police had originally charged Buckley with aggravated assault, then charged him with murder upon Giraudo’s death. But San Francisco DA Kamala Harris decided to file involuntary manslaughter charges against Buckley instead.

Harris, however, said charging Buckley with murder would not be appropriate. She said Giraudo’s death paralleled other “one-punch cases” in which a suspect takes a swing at someone but does not intend to kill, and that judges and juries have rejected murder charges in such cases in the past.

In the meantime, Buckley is being held on $1 million bail.

This is a pretty sad story. Haven’t we had enough baseball-related deaths already?