After his playing career, he served for more than 25 years as chairman of The Jimmy Fund, an event fundraising organization affiliated with the Dana–Farber Cancer Institute in Boston, Massachusetts.

[3] Even though he was reunited with the newly promoted Williams in 1967, Andrews started his rookie season on the bench in favor of Reggie Smith, who had been shifted from center field.

In a transaction requested by his old manager Dick Williams despite the objections of team owner Charlie Finley, Andrews signed with the Oakland Athletics on July 31, 1973.

With two outs and the Mets leading 7–6, John Milner's ground ball went through Andrews' legs for the first error, allowing Tug McGraw and Willie Mays to score.

One batter later, Jerry Grote hit a ground ball to Andrews, whose throw to first pulled Gene Tenace off the bag for the second error, which allowed Cleon Jones to score.

Oakland owner Charlie Finley forced him to sign a false affidavit saying he was injured, thus making him ineligible to play for the rest of the series.

Andrews's first contact with The Jimmy Fund was in his rookie season with the Red Sox in 1967 when Bill Koster, then the charity's chairman, asked him if he could meet with a twelve-year-old cancer patient.

He accepted under the condition that the job be part-time because he was still working for the Massachusetts Mutual Life Insurance Company, which he had joined after his professional baseball career ended.