Byrnes was general manager of the Arizona Diamondbacks from 2005 until this July. The Diamondbacks were 349-378 during his tenure, making the playoffs once. Byrnes was fired on July 2, when the Diamondbacks were 15 games out of first place in the National League West division.
Alderson was general manager of the Oakland Athletics from 1983 to 1997, building a team the won three American League pennants and the 1989 World Series title. Alderson has worked in the Major League Baseball commissioner’s office and most recently as chief executive of the San Diego Padres.
The Mets relieved Omar Minaya, 51, of his duties as general manager on Oct. 4. The team was 506-466 in Minaya’s six-year tenure.
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