Sandy Alderson, the Mets’ 68-year-old manager, has cancer and will undergo eight to 12 weeks of chemotherapy, the team disclosed on Friday.
The Mets said that the cancer was treatable, and that they were optimistic that Alderson would make a full recovery, but the type of cancer was not immediately made known. Because of the treatment, Alderson will not attend baseball’s winter meetings next week in Nashville.
Alderson is coming off a triumphant season in which his five-year effort to rebuild the team reached fruition. The Mets not only had their first winning season since 2008, but they also captured the National League East and then the N.