As many as five Alameda County sheriff’s deputies are under investigation in San Francisco in connection with the baton beating of a car theft suspect they had chased over the Bay Bridge and into an alleyway in the Mission District, sources close to the case tell us.

Surveillance-camera footage turned over to the San Francisco public defender’s office showed two deputies tackling 29-year-old Stanislav Petrov on Nov. 12, then punching him and repeatedly clubbing him with their batons, even after he appeared to put his hands on his head in surrender.

The deputies hit Petrov so hard they broke both his arms, which now have metal rods and plates in them.

The two deputies, identified by the Alameda County Sheriff’s Office as Luis Santamaria and Paul Weiber, are on paid leave pending the outcome of the San Francisco police and district attorney’s investigation.

Sources tell us that the investigation has expanded to include as many as three other Alameda County deputies who were on the scene. We’re told authorities are looking at whether the deputies stole items from people who were in the alley, among other possible crimes.

“It’s a mess, and it doesn’t look good — but if they did it, they deserve everything they get,” said one law enforcement official with knowledge of the case. Like other sources, he spoke on condition of anonymity because the probe is still under way.

District attorney’s spokesman Alex Bastian and Sgt. J.D. Nelson, spokesman for the Alameda County sheriff, declined to comment.

The incident began when Petrov allegedly rammed two squad cars in San Leandro with a stolen car, then led Alameda County deputies on a 38-minute chase over the Bay Bridge. Investigators later found methamphetamine and a handgun in the car, according to the Alameda County Sheriff’s Office.

Word is D.A. George Gascón is close to making a call on whether any deputies will be charged — and that he could be holding a news conference sometime after the Super Bowl.

Sail away: After more than a decade at the helm, Port of San Francisco Executive Director Monique Moyer is moving on.

“For someone who joined the city on what was intended as a two-year sabbatical from an investment banking career, this two-decade odyssey has been a heady experience,” Moyer said in her goodbye letter Friday.

Moyer was appointed to her post in 2004 by then-Mayor Gavin Newsom after heading the city’s retirement fund during the Willie Brown years. At the port, she has overseen the waterfront’s transformation into one of the hottest real estate properties in the U.S.

But all was not smooth sailing.

In 2008, Moyer sent a letter to the city Department of Human Resources saying she and other port staffers had been the target of boozy and harassing late-night calls from then-Board of Supervisors President Aaron Peskin.

According to Moyer, Peskin threatened the jobs of port staffers who disagreed with him over building height limits.

Peskin later apologized.

It’s interesting to note that Moyer’s exit comes just weeks after voters returned Peskin to his perch on the Board of Supervisors.

Game plan: Looks like President Obama and Vice President Joe Biden will both be no-shows at Sunday’s Super Bowl in Santa Clara — despite earlier indications that at least one of them might be there.

Obama, we’re told, wanted to avoid creating an added burden on security. But the president will be in the neighborhood later in the week.

He’s scheduled to headline at a $250- to $25,000-a-head Democratic National Committee brunch reception Feb. 11 at the Atherton home of Steve Westly, the venture capitalist and former state controller who is eyeing a run for governor in 2018.

Westly, who used to be on the board of the digital-ad company RadiumOne, is still trying to answer for his role in helping its founder, Gurbaksh Chahal, wriggle out of 45 felony domestic violence charges after he allegedly punched his girlfriend 100 times over half an hour in his Rincon Hill penthouse.

Westly declined to discuss the issue with us back in November but just days later told the Sacramento Bee that he “clearly made a mistake here.”

Money talks: Golden State Warriors President Rick Welts called the JPMorgan Chase megabucks naming rights deal on the team’s planned San Francisco arena “an absolute cornerstone” for financing the project.

Funny thing is, Warrior Welts has also been all over TV in recent weeks as the pitchman for City National, saying the bank “is a bedrock part of what we’ve built here as our foundation. ... City National is the way up for the Warriors.”

Not for long, though.

Welts tells us the Warriors’ “awesome” relationship with City National will continue through next season — at which point Chase will be the only financial outfit that can link itself to the team’s name.

Seems only fair, from Chase’s perspective, seeing as how the as-yet-undisclosed cost of the naming rights deal could be the priciest ever for a U.S. arena.

San Francisco Chronicle columnists Phillip Matier and Andrew Ross appear Sundays, Mondays and Wednesdays. Matier can be seen on the KPIX TV morning and evening news. He can also be heard on KCBS radio Monday through Friday at 7:50 a.m. and 5:50 p.m. Got a tip? Call (415) 777-8815, or e-mail matierandross@sfchronicle.com. Twitter: @matierandross