The university announced that Walsh died at his Chester, N.H. home Tuesday. The exact cause was not released. He was 58.
Walsh won five Ivy League championships in his 17 years with the Crimson. Prior to Harvard, he served as head coach at his alma mater, Suffolk University in Boston, for 15 years.
He was 347-388-2 overall at Harvard and 204-136 in Ivy League play. He compiled a 569-564-3 record at both schools.
He led Harvard to a school-best 36-12 record in 1998 and No. 24 national ranking.
Athletics Director Bob Scalise called Walsh’s death “a tragic day for everyone associated with Harvard athletics, Massachusetts baseball and the larger baseball community.”
The Boston native is survived by his wife, Sandra, and four daughters.