Oakland Athletics Roy Eisenhardt, one of the firm's partners, left to become president of the
Oakland Athletics when his father-in-law,
Walter A. Haas Jr., bought the team. In
1981, Alderson joined Eisenhardt to become the Athletics' general counsel and in 1983 was named the team's general manager, a position he held through 1997. Under Alderson, the Athletics' minor league system was rebuilt, which bore fruit later that decade as
José Canseco (1986),
Mark McGwire (1987), and
Walt Weiss (1988) were chosen as
American League Rookies of the Year. The Athletics won four division titles, three pennants and the
1989 World Series during Alderson's tenure. In 1995, Haas died and the team's new owners,
Stephen Schott and
Ken Hofmann, ordered Alderson to slash payroll. As a result, Alderson began focusing on
sabermetric principles toward obtaining relatively undervalued players. He was a mentor to his eventual successor as general manager,
Billy Beane.
Commissioner's office Alderson left the Athletics to work for
Major League Baseball's
commissioner’s office, where he was the Executive Vice President for Baseball Operations between September
1998 and
2005. In 2010, Alderson worked as commissioner
Bud Selig’s point man to address the issues of the corruption of baseball in the
Dominican Republic, the largest supplier of Major League Baseball talent outside the United States.
San Diego Padres Alderson served as
chief executive officer for the
San Diego Padres from 2005 to 2009, with the team winning back-to-back division titles in 2005 and 2006. Concurrently, he lectured at the
University of California, Berkeley Haas School of Business.
New York Mets Alderson was hired by the
New York Mets after the 2010 baseball season to replace
Omar Minaya as the general manager. He was officially introduced on October 29, 2010, signing a four-year deal with a club option for 2015. Mets owner,
Fred Wilpon, was dealing with his involvement in the
Madoff investment scandal, and Alderson worked with a limited budget. As Alderson was
Billy Beane's predecessor and mentor with the Oakland A's, and as the Mets also hired Beane's former associates
Paul DePodesta and
J. P. Ricciardi to the front office, the team was jokingly referred to as the "Moneyball Mets". The first big money signing that Alderson did with the Mets was a 7-year contract extension for
David Wright in December 2012 which was worth $138 million (7 years for $122 million plus a club option for $16 million that the club picked up for the 2013 season). Wright's deal was contrary to the Mets budget-conscious policy of not offering large contracts to players aged in their 30s. Nonetheless, Alderson made an exception as he viewed Wright as a leader and role model, on and off the field. Although it had been six years since the Mets' last playoff appearance and four years since their last winning season, Alderson managed to persuade Wright to stay, as the Mets' farm system had many young, talented pitchers. From 2012 to 2014, Alderson reduced the Mets payroll to under $100 million, and exchanged veterans to acquire young talent such as
Zack Wheeler,
Noah Syndergaard, and
Travis d'Arnaud. Alderson also developed players drafted by Minaya such as
Matt Harvey,
Jacob deGrom, and
Steven Matz. The Mets won the
National League Pennant in 2015, earning their first
World Series appearance since 2000. Alderson took a leave of absence from the Mets in July 2018 due to a recurrence of cancer. He was informally succeeded on an interim basis by
John Ricco, Omar Minaya, and J. P. Ricciardi. After the season he later decided not to return to the position. Since then, he has been cancer-free.
Return to the Athletics In January 2019, Alderson returned to the Oakland Athletics as senior advisor of baseball operations to general manager
Billy Beane. He left the position after the 2020 season in order to return to the Mets front office.
Return to the Mets In September 2020, new Mets owner
Steve Cohen hired Alderson as team president after he was approved as majority owner by MLB. He replaced
Saul Katz, who had served in that capacity since 1980. In September 2022, it was announced he would step down as team president and move into a special advisory role. In February 2023, Alderson was officially no longer the president of the team. ==Personal life==