The singer retired in 2018 but made a rare public appearance at Saturday’s game.

Diamond himself performed “Sweet Caroline” at Fenway on opening night of the 2010 season.

Diamondretired from touring in 2018due to his diagnosis with Parkinson’s disease.

BOSTON, MASSACHUSETTS - JUNE 18: Singer-songwriter Neil Diamond performs “Sweet Caroline” during the eighth inning between the St. Louis Cardinals and the Boston Red Sox at Fenway Park on June 18, 2022 in Boston, Massachusetts. (Photo by Sarah Stier/Getty Images)

Neil Diamond reaching out, touching me, touching you at Fenway Park.Sarah Stier/Getty

“It is with great reluctance and disappointment that I announce my retirement from concert touring.

“My thanks goes out to my loyal and devoted audiences around the world.

You will always have my appreciation for your support and encouragement.

This ride has been ‘so good, so good, so good,’ thanks to you.”

Despite the legend’s appearance, the Sox still lost handily to the Cardinals, 11-2.