OAKLAND -- The A's welcomed back a familiar presence on Tuesday by naming Sandy Alderson as senior advisor to baseball operations.
Alderson, who most recently served as general manager for the Mets from 2011-18, was the executive who was responsible for assembling the A's three consecutive American League championship teams (1988-90). The '89 club won the World Series by sweeping the Giants in four games.
Alderson served with the A's under different front-office titles from 1981-98. He then became Major League Baseball's executive vice president of baseball operations from 1998-2005 before joining the Padres as chief executive officer from 2005-09. He was a special consultant to Baseball's Commissioner for Latin America in 2010 before joining the Mets.

"I am thrilled to welcome Sandy as a senior advisor to baseball operations," A's executive vice president of baseball operations Billy Beane said in a statement. "His mentorship and friendship have been invaluable to me over the course of my career, and I look forward to the expertise and perspective he will add at every level of the organization. [General manager] David [Forst] and I couldn't be more excited to bring him back to Oakland."
"I am really excited to return to the A's and the Bay Area," Alderson said in a statement. "I look forward to being as helpful as I can to Billy, David, and the rest of the baseball operations staff."