Daydreamer Jason, 11, has just been [dropped] from his Little League team.Seeking solace at the baseball-card shop, he makes a startling hypothesis: 'Buck McHenry,' star pitcher [of the Negro Leagues], could be school custodian Mack Henry.Mr. Henry's identity, in doubt through much of the book, provides a mystery, a bittersweet revelation, and a satisfyingly dramatic denouement.The characterizations are pungent, the action (on and off the diamond) involving.A solid, rewarding story." 'K. Finalist, 1992 Edgar AllanPoe Award, Juvenile Category (Mystery Writers of America)Children's Choices for 1992 (IRA/CBC)