BERKELEY — News that leaked three days earlier became official on Wednesday when Cal announced Andy Buh as the football team’s new defensive coordinator.

Buh (pronounced Boo) will join Sonny Dykes’ staff after coaching linebackers for Wisconsin in the Jan. 1 Rose Bowl against Stanford.

The 39-year-old spent the previous two seasons as defensive coordinator at Nevada. He worked as a defensive administrative assistant at Cal in 2000 and ’01. Buh spent the 2007-09 seasons coaching linebackers at Stanford, working his final two years as co-defensive coordinator under Jim Harbaugh.

“I’m truly excited for the opportunity to come back to the Bay Area and the University of California,” Buh said in a statement. “Cal is a program that has all of the resources to be a consistent winner in the Pac-12. I have a tremendous amount of respect for coach Dykes and what he has done over his career.

“I cannot be more excited to meet the players, the staff and all that makes Cal a special place to be.”

Buh ran a 4-3 defensive alignment at Nevada and Dykes said that will be the Bears’ base next season. But he also said Buh will be flexible, adapting to the talent he has and the opponent.

“We’ll be multiple enough to address all the different things we see in the Pac-12,” Dykes said Wednesday. “There’s a lot of different offenses to be prepared for.”

Dykes said Buh shares his philosophy of presenting a fundamentally sound defense, rather than playing high-risk, gimmick schemes.

Dykes said he has known Buh for several years and was excited by the chance to work together. He praised Buh’s knowledge of recruiting in California as another asset he brings the Bears.

For more on Cal sports, see the Bear Talk blog at ibabuzz.com/beartalk. Follow Jeff Faraudo on Twitter at Twitter.com/CalBearsBANG.