In 1961, the Senators moved to Minnesota, where they became the Twins, and the Wolffs eventually moved to Edgemont, N.Y., in Westchester County, where Mr. Wolff grew up. He played baseball and football at Edgemont High School, graduating in 1969, and attended Harvard.
As an infielder playing for Harvard, he began looking for a mental edge but found little information about sports psychology. In time he adapted the visualization techniques advanced by the surgeon Maxwell Maltz in his book “Psycho-Cybernetics.”
The Detroit Tigers picked Mr. Wolff late in the 1972 amateur draft, and he played in their minor league system in 1973 and 1974 while completing his Harvard bachelor’s degree in psychology.
After playing in the minors, Mr. Wolff became editor in chief at the Alexander Hamilton Institute, a now defunct organization that published educational materials on business and management. He continued to hold that job after he became head baseball coach for Mercy College in Dobbs Ferry, N.Y., in 1978. He coached there until 1985, leading the team to a 114-81-3 record.
In 1982, he married Patricia Varvaro, who survives him. In addition to her and his son, he is survived by two daughters, Alyssa Wolff and Samantha O’Connor; a brother, Dr. Robert Wolff; a sister, Margy Clark; and three grandchildren.