Diamonds is a musical revue about baseball. The book and music were created by many writers, composers, and lyricists. Among them were Ellen Fitzhugh, Roy Blount, Jr., and John Weidman (book); and Larry Grossman, Comden and Green, Howard Ashman, and Cy Coleman, music.
The musical ran Off Broadway at the Circle in the Square Downtown theater, beginning on December 16, 1984 and closing on March 31, 1985, after 122 performances. The production was directed by Broadway veteran Harold Prince. The cast included Loni Ackerman, Susan Bigelow, Jackée Harry, Scott Holmes, Dick Latessa, Dwayne Markee, Wade Raley, Larry Riley, Nestor Serrano, Gordon Stanley and Chip Zien.
The musical won the Outer Critics Circle Award for Best Set Design, by Tony Straiges.
The Los Angeles Times quoted several reviews of the piece. "Is it a hit ? Will it have a run ? Frank Rich of the New York Times didn't particularly think so. Clive Barnes of the New York Post definitely thought not: 'A fiasco of the smallest, dullest kind. Say it ain't so, Hal.' But the Daily News Doug Watt thought the show had some cute ideas, such as its Kabuki-style rendering of 'Casey at the Bat.' His final verdict: 'Call 'Diamonds' a Little League homer and let it go at that.'"