Who’s really calling the shots on plans for a new A’s ballpark?

Oakland Mayor Libby Schaaf’s push for a possible ballpark at Howard Terminal north of Jack London Square hasn’t won over A’s managing partner Lew Wolff. On the other hand, we’re told the mayor is getting a more receptive ear from the person whose voice counts most — the team’s majority stakeholder, John Fisher.

“Fisher has taken a much more hands-on approach (to the search), and that’s why they’re studying that terminal site,” said a City Hall source who has spoken to the mayor on the subject.

Fisher, the youngest son of late Gap founder Donald Fisher, is worth an estimated $2.3 billion and reportedly owns an 80 percent stake in the A’s. But since buying the franchise in 2005, the San Francisco resident has largely remained a silent partner, preferring to let co-owner Wolff speak for the A’s.

Incidentally, after Schaaf made her Raiders stadium sales pitch to NFL owners meeting in New York back in November, she dropped in on baseball Commissioner Rob Manfred to brief him about her talks with Fisher and to promote the Howard Terminal ballpark site.

Play ball!

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