An altercation between baseball fans outside of a San Francisco bar this week escalated into fatal mayhem when Jonathan Denver was fatally stabbed.

Denver and others involved in the fight had attended the San Francisco Giants and Los Angeles Dodgers game before the stabbing took place.

Two men have been arrested but nobody has been charged yet.

"There was a back-and-forth about the Giants-Dodgers rivalry, which deteriorated into a physical fight," San Francisco Police Chief Greg Suhr said.

San Francisco is gaining a reputation for sports fan-related violence.  In 2011 a Giants fan was badly beaten in the stadium parking lot on Opening Day.

"There is no place at these games for violence," Suhr said. "Nobody's life should be at stake, whether they're at the game, leaving the game, whether it's six blocks away and an hour and a half after the game.

The Giants released a statement following this week's fatal incident.

"While details are still emerging, we want to be clear that there is absolutely no place in our community for this type of senseless violence. The Giants are working with the San Francisco Police Department to step up enforcement in and around the ballpark tonight and throughout the rest of this final home stand. We will also observe a moment of silence in memory of Mr. Denver before tonight's game."

Just days earlier, according to the USA Today, a San Francisco 49ers fan was attacked at Candlestick Park when the 49ers were hosting the Indianapolis Colts.

Denver went to the game earlier in the night with his father, girlfriend, two brothers, and one other friend. After the game, he went to a bar several blocks from the stadium and that was when everything unraveled.