The LAPD and Dodger owner Frank McCourt outlined new security measures Friday at Dodger Stadium.
As part of the plan, off-duty officers who normally work security at Dodger Stadium will now be in uniform with full arrest authority.
"If you go to that homestand next week, you're going to see a sea of blue, and it's not gonna be Dodger blue, it's gonna be LAPD blue," Beck said. "People will be awed by the response of the Los Angeles Police Department, because we will not suffer this as a city again."
Beck said there will be a "zero-tolerance'' policy at the stadium, and violators will either be ejected from the game or arrested.
A long-standing no-tailgating policy at the stadium will also be strictly enforced. Beck said officers will be at all stadium entrances and exits.
Expect that show of force for the Dodgers next home game, which is scheduled for 7:05 p.m., Thursday against the Cardinals. Beck said the Dodgers will pay for the extra security.
"The Dodgers have been very up front in saying they'll pay for policing costs," Beck said.
The measures are in response to last week's beating of a Giants fan in a Dodger Stadium parking lot after LA's home opener against San Francisco. Bryan Stow remains hospitalized, and authorities are asking for help in their investigation.
"I think this has really had an impact on the organization," McCourt said Friday. "We're going to fix this issue. We're going to address it."
Police have received 80 tips in the case and interviewed some witnesses, said Deputy Chief Jose Perez Jr., the lead investigator. The clues have not led to any suspects "that we can identify and arrest," Perez said.
The reward is $150,000 after radio personality Tom Leykis said Thursday that he was adding $50,000.
Security at Dodger Stadium was increased in 2005, including the first deployment of LAPD officers in the history of the stadium, which opened in 1962, after fans in outfield seats littered the field with debris in response to the arrest of two teenage boys who had gone onto the outfield during a short-lived "$2 True Blue Tuesdays" promotion.
"We have gone down a slippery slope of fan misbehavior," Beck said at Friday's news conference. "It starts in our youth leagues and continues on into the major leagues. At every level, we're going to talk about how people behave at sporting events."