By Laila Kearney
SAN FRANCISCO, Sept 26 (Reuters) - A Los Angeles Dodgers fan was stabbed to death within blocks of the San Francisco Giants baseball stadium in a fight between supporters of the rival franchises two years after a Giants fan was severely beaten at Dodger Stadium, police said on Thursday.
The deadly fight began at 11:30 p.m. on Wednesday night, just over an hour after the Giants' 6-4 win over the Dodgers at AT&T Park in San Francisco, police said.
Jonathan Denver, the son of a Dodgers security guard, was stabbed by a Giants supporter blocks away from the park, police said. Denver, 24, of the Northern California town of Fort Bragg, was taken to a hospital where he died of his wounds.
"The Dodgers are shocked and saddened to learn of the death of Jonathan Denver," the team said on its official Facebook page. "There is no rational explanation for this senseless act which resulted in Jonathan's death. The pain that this has caused his family and friends is unimaginable."
Denver, who was dressed in Dodgers gear, had been with a group of Dodgers fans who left a bar after going to Wednesday's game. At around the same time, a rival group left a nearby nightclub, and a shouting match ensued, police said.
"It started off with a back-and-forth: 'Go Dodgers!' 'Go Giants!' and it deteriorated from there," said San Francisco Police Chief Greg Suhr.
The death follows a 2011 attack on Giants fan Bryan Stow, who was badly beaten in a Dodger Stadium parking lot in an attacks that raised concerns about stadium security.
Stow, a paramedic and father of two, suffered brain damage. Two men are awaiting trial on charges stemming from that beating.
In the San Francisco violence, it was not immediately clear which group started the fight, and a murder weapon had not been located, Suhr said.
Police arrested a man who "made incriminating statements" related to the attack while in custody, and he will be charged with homicide. His name was not released.
Another man was also detained, but Suhr said he did not know what charges could be brought against him. Police are searching for two more men connected to the incident.
San Francisco police planned to increase uniformed and undercover patrol operations at a game scheduled for Thursday night between the Giants and the Dodgers. Some police officers would be wearing Dodgers attire, Suhr said. (Editing by Alex Dobuzinskis, Cynthia Johnston and Philip Barbara)