ATLANTA — Longtime Atlanta Braves executive John Schuerholz is stepping back from a day-to-day role with the team.

The Braves announced several front-office changes Thursday, including Schuerholz’s move from team president to vice chairman. Mike Plant will take over as president in charge of development while Derek Schiller becomes president overseeing business.

Braves chairman and CEO Terry McGuirk said Schuerholz is giving up “day-to-day business and development duties” but will continue to serve as a consultant on baseball operations.

The 75-year-old Schuerholz was general manager of the Braves from 1990 through the 2007 season, building a powerhouse that won 14 straight division titles and the 1995 World Series championship. He became the team president after giving up the GM title.

John Hart remains president of baseball operations with John Coppolella as GM.

ROCKIES: Left-hander Tyler Matzek returned to spring training after two weeks spent taking brain tests and receiving coaching for performance anxiety.

Matzek started Colorado’s home opener last year but ended up in the low minors because of control and confidence issues. He failed to get anybody out in his first spring appearance, was scratched from his next start and then left camp March 14.

Matzek spent the past two weeks in Denver with the Rockies’ new mental skills coach, former NFL linebacker and psychologist Dr. Rick Perea. Matzek said he took neurotherapy tests twice a day while being coached about handling brain wave imbalances.

Matzek is uncertain when he’ll throw next. He’ll likely begin the season in the minors.

YANKEES: Reliever Andrew Miller plans to pitch with a broken wrist in his glove hand.

Miller sustained a chip fracture of his right wrist Wednesday when hit by a line drive off the bat of Willians Astudillo of Atlanta.

“I think I can work around it,” Miller said. “I’m not too worried, it’s my right hand.”

Miller will see a hand specialist in the next few days.

“I have some swelling, some soreness,” Miller said. “All things considered, better than I expected.”